Stainless Steel Sippy Cups: What the Lid and Spout Are Made Of
A steel body takes the plastic out of the cup. The lid, spout or straw is still the part that touches your child's mouth, and most makers do not say what it is. Here is what the makers' own pages say about it for the stainless cups we could read, which cups name their materials, and what none of them tells you.
We read the maker's own page for stainless steel toddler cups from eight makers on 2026-10-26. Most say the cup is stainless and "BPA-free" and stop there. Only Klean Kanteen (for one cup) and Pura name silicone or steel for every part that goes in a child's mouth; Zak and Nuby name a silicone spout or straw but not the lid; Munchkin's text, Béaba and Thermos name none for the cups we read; and Contigo's page says the lid is plastic. Apart from a MadeSafe certification that Pura claims and we did not verify, none of the pages cites a test standard. Our pick is Klean Kanteen's 10 oz Kid's Cup with Straw Lid, because its page names steel and silicone for every part we can see. The catch is that Klean Kanteen says it is not leakproof and recommends it for ages 3 and up. For a younger child who needs a cup that seals itself, Munchkin's Miracle 360 is the one whose maker describes that design, and its product text does not say what the lid and rim are made of.
On your shelf: what the maker says about the lid and spout
Four brands you may already own, set against what each maker's own page says on 2026-10-26. The badge says only whether the maker names the material of each part that touches a mouth. It is not a safety grade: none of these pages cites a test standard, and a maker that says nothing may still use a good material. The product in your hand wins, because packages and models change.
- Munchkin stainless steel cups: what are the lid and drinking edge made of?Maker names no material, or only some parts
- Munchkin's page for the Miracle 360 (10 oz, "12+ months") calls it a "Premium insulated, vacuum sealed stainless steel cup", with a "Spoutless 360° edge" and "BPA-free". Its product text does not name the lid, the 360° rim or the sealing part; the page's image descriptions call it a "silicone lid and rim" and one icon reads "Dishwasher top-rack only". It says nothing about lead, coatings or testing. Its page for the Cool Cat straw cup (8 oz, "18+ months") says "Insulated, double walled stainless steel straw cup" and "BPA-free", and its text also does not name the lid, straw or handle material. Neither page says how the bottom of the insulated cup is sealed. We found no recall of a Munchkin cup or bottle in CPSC's recall database; Munchkin's own recall page lists three recalls, a bath toy, a pacifier set and bath toys, none a cup. Source (checked )
- Nuby stainless steel cups: what does the maker say?Maker names no material, or only some parts
- Nuby's page for the Thirsty Kids REFLEX Stainless Steel Travel Canteen (10 oz, "18+ months") says "The soft silicone spout is uniquely designed to be delicate and gentle to gums and teeth" and "Hand wash only"; it names no cap, cover or handle material and makes no BPA, lead or testing statement. Its page for the Thirsty Kids Flexstraw Stainless Steel Cup (12 oz) names a "silicone valve" and a "Soft silicone easy-clean straw", and describes, in its page description tag, a "304 food-grade stainless steel cup base"; it names no lid material and also makes no BPA, lead or testing statement. We did not find a BPA line on either of the two pages we read. We found no recall of a Nuby cup or bottle in CPSC's recall database; we did not search other countries' regulators. Source (checked )
- Contigo Kids stainless steel bottle: what is the lid made of?Maker names plastic in the lid or body
- Contigo's page for the Kids Straw Stainless Steel Water Bottle with AUTOSPOUT Lid (13 oz, "For ages 3 and up") describes a "Vacuum Insulated Stainless Steel Body" and says "BPA-free plastic lid and body are top-rack dishwasher-safe"; the page does not say whether the straw or spout is silicone. Separately, CPSC announced a recall of about 5.7 million "Contigo Kids Cleanable Water Bottles" because "the clear silicone spout can detach, posing a choking hazard to children"; CPSC's page for the 2020 re-announcement lists stainless steel and stainless steel solid colors among the recalled colors and says the firm had 427 reports of spouts detaching, including 27 found in children's mouths. That recall named the Kids Cleanable line with a black spout base and cover. We found no CPSC statement on whether the current AUTOSPOUT stainless bottle is covered, so we do not say it is, and Contigo's page for it describes a redesigned straw. It is not a pick here because its maker names plastic in the lid, the one place on this list where a maker answered the question with plastic. Silicone is not a guarantee either: the part CPSC recalled was a silicone spout that detached, so check any silicone tip for tears or loosening. Source (checked )
Brands in this guide
Klean Kanteen2 picks · safety review- Munchkin1 pick
- Zak Designs1 pick
Our picks
Cheat-sheet winners
The winners from our cheat sheet, each chosen for one job.
Best no-spill sippy cup
Munchkin Stainless Steel Sippy Cup
Stainless body with the established 360 no-spill design: a spoutless edge with no separate valve, labeled BPA-free. Munchkin does not name the material of the lid and drinking edge, the part that touches a mouth.
Manufacturer statement checked · source
$15.59View on Amazon
Our top pick
Klean Kanteen 10oz Kid's Straw Cup (June)
Manufacturer statement checked · source
Klean Kanteen 10oz Kid's Cup with Straw Lid, our top pick for ages 3 and up. The maker's page says the "Cup and straw [are] made from certified 90% post-consumer recycled 18/8 stainless steel", that it is "BPA-, BPS-, BPF- and lead-free", and that the straw tip is "made from safe and flexible silicone"; the maker's Straw Lid page, for the lid sold with the cup, says "Lid and straw tip made of food grade silicone", so every part we can see is named. The same page says "Kid's Cup is NOT leakproof. Recommended for ages 3+." The maker tags it "non-insulated", so there is no vacuum layer and no bottom disc to check. The colored finish is Klean Kanteen's "Klean Coat®"; on the 12 oz bottle's page the maker calls it "a powder coat finish" and publishes no test result, and neither page says whether "lead-free" covers the coating. On 2026-10-26 Amazon listed it in limited stock from Pattern Professional at $17.95; Klean Kanteen sells it at $17.95 on its own site, two for $30.
Also worth considering
Manufacturer statement checked · source
Munchkin Miracle 360, 10 oz, labeled "12+ months". The maker says "Cup automatically seals when child stops drinking" and "Easy to clean with no extra valves or parts", so it is the only pick whose maker describes a self-sealing rim. Its product text does not name what the lid or the 360° edge is made of (the page's image descriptions say "silicone lid and rim"), and it is insulated ("vacuum sealed"), so the bottom-seal check on our cheat sheet applies; the page does not describe how the bottom is sealed. Its only safety line is "BPA-free". On 2026-10-26 Amazon listed it in stock from Amazon.com at $15.59; Munchkin's page showed $16.79.
Manufacturer statement checked · source
Klean Kanteen 12 oz Kid's Classic Sippy, labeled "Age 6+ months" on the maker's page for the sippy version, non-insulated stainless that the maker says is "BPA-, BPS-, BPF- and lead-free". Klean Kanteen sells the same bottle with a Sport Cap that it says is "not intended for children 3 and under" (see our cheat sheet); the 6+ label belongs to the sippy cap. The Amazon title names the "Dust Cover & Attachable Loop", which are sippy cap features, but we did not read the Amazon page, so check which cap is in the box. The maker's page for the sippy cap says "Spill proof" in one line and lists "Leakproof: No" in its specs. Neither page names what the cap, spout or valve is made of, and the cap's page says "Not for use with hot beverages." That is the opposite of the straw cup above on the question this page asks. On 2026-10-26 Amazon listed it in stock from Pattern Professional at $17.95, the price on Klean Kanteen's own site.
Zak Designs Kelso Insulated Tumbler, 12 oz, "Recommended for kids aged 3+". The maker's materials line reads "Stainless steel and silicone" and names a "silicone sipper spout" with a built-in valve; it does not name the lid or ring, and makes no BPA, lead or testing statement. It is "double-wall vacuum insulated", so check the bottom. Zak lists it as top-rack dishwasher safe but recommends hand washing "to preserve its bright design", and says that "a small amount may leak" if a full cup lies on its side, though the Amazon title says "Leak-Proof". On 2026-10-26 Amazon listed it in stock from Amazon.com at $12.99, the lowest price of the four picks; Zak's page showed $14.99.
Every stainless cup we read, by maker
One card per maker. The badge says whether the maker's own page names silicone or steel (or plastic) for each part that touches a mouth; the quote is the maker's wording, read on 2026-10-26 on the page linked in the card. The badge is about what a maker states, not a ranking and not a safety finding. A maker name links to its SafeMama profile when one is published.
10 oz Kid's Cup with Straw Lid: "Straw tip made from safe and flexible silicone"; Straw Lid page: "Lid and straw tip made of food grade silicone"; "Cup and straw made from certified 90% post-consumer recycled 18/8 stainless steel"; "BPA-, BPS-, BPF- and lead-free".
- Amazon, 2026-10-26
- $17.95, limited stock, from Pattern Professional; the maker's site $17.95 (two for $30)
- Age and leak line
- "Recommended for ages 3+" and "NOT leakproof"
- Recall history
- CPSC lists a 2010 recall of the brand's plastic Sport Cap 2.0 bottle spouts (about 1.2 million in the US); we found no recall of a kids cup or of the silicone lid named here
Where it landed: Top pick (10 oz Kid's Cup with Straw Lid)
12 oz Kid's Classic Sippy: "Made from certified 90% post-consumer recycled 18/8 stainless steel"; "BPA-, BPS-, BPF- and lead-free". Neither the bottle's page nor the sippy cap's page names what the cap, spout or valve is made of.
- Amazon, 2026-10-26
- $17.95, in stock, from Pattern Professional
- Age and leak line
- "Age 6+ months"; the cap's page says "Spill proof" and lists "Leakproof: No"
Where it landed: Runner-up pick
Munchkin
Maker names no material, or only some partsPickMiracle 360: "Premium insulated, vacuum sealed stainless steel cup", "Spoutless 360° edge", "BPA-free". Cool Cat: "Insulated, double walled stainless steel straw cup", "BPA-free". Neither page's text names the lid, straw or rim material; the Miracle 360 page's image descriptions say "silicone lid and rim".
- Amazon, 2026-10-26
- Miracle 360 $15.59, in stock from Amazon.com; Munchkin's page $16.79
- Age line
- Miracle 360 "12+ months"; Cool Cat "18+ months"
Where it landed: Runner-up (Miracle 360). Cool Cat not added: the page names the same things and nothing more
Zak Designs
Maker names no material, or only some partsPickKelso Insulated Tumbler: "Material: Stainless steel and silicone"; "The silicone sipper spout has a built-in valve". The lid and ring are not named.
- Amazon, 2026-10-26
- $12.99, in stock from Amazon.com; Zak's page $14.99
- Age line
- "Recommended for kids aged 3+"
- Recall history
- CPSC lists a 2015 recall of Zak Designs 26-ounce plastic water bottles (a straw that could break), a different product; we found no recall of this cup
Where it landed: Runner-up pick, the lowest price
Pura
Maker names silicone or steel for every mouth-contact partKiki 11oz Sippy Bottle: "Kiki™ XL Sipper Spout™ ... 100% silicone"; "100% medical-grade, platinum-cured silicone"; "18/8 Food Service-Grade Stainless Steel Bottle: Single-wall construction"; "Paint-free"; "BPA-free. BPS-free. PP-free. Phthalate-free. Lead free."; "100% Plastic-Free: The bottle, sleeve, collar, sippy spout, and travel cover all contain zero plastic"; "MadeSafe® Certified" (a claim we did not verify with the certifier). Bottle "Age Range: 6 months and up".
- Maker's store, 2026-10-26
- Sippy Bottle $27.99; Kiddo Straw Bottle $28.99. The Sippy Bottle page says it is "available for pre-order", and two colors showed sold out
- Amazon, 2026-10-26
- The Kiki 11 oz listing showed a lead time, not in stock, from a third-party seller at $34.98
Where it landed: Not picked: its Amazon listing was not in stock and we pick only what is. Of the pages we read, Pura's names the most, but those are the maker's claims. Buying from the maker is the way to get it
Nuby
Maker names no material, or only some partsREFLEX Travel Canteen: "The soft silicone spout is uniquely designed to be delicate and gentle to gums and teeth"; "Hand wash only". Flexstraw cup: "Soft silicone easy-clean straw with air valves", "304 food-grade stainless steel cup base" (in the page's description tag; the visible text says "food-grade stainless steel"). The caps and lids are not named, and neither page makes a BPA or lead statement.
- Maker's store, 2026-10-26
- REFLEX 10 oz $15.99; Flexstraw 12 oz $17.99; both "18+ months"
Where it landed: Not picked: no lid material and no BPA, lead or testing line on the pages we read
Contigo
Maker names plastic in the lid or body13 oz Kids Straw Stainless Steel Water Bottle with AUTOSPOUT Lid: "BPA-free plastic lid and body are top-rack dishwasher-safe"; "Vacuum Insulated Stainless Steel Body".
- Maker's page, 2026-10-26
- $23.99 recommended retail, "For ages 3 and up"
- Recall history
- CPSC's 2019 recall, re-announced in 2020, covered a different product, the Kids Cleanable bottle with a black spout base (about 5.7 million), for a detaching silicone spout. We found no CPSC action naming this AUTOSPOUT bottle. CPSC also lists a 2015 recall of plastic Bueno by Contigo kids straw tumblers, another line
Where it landed: Not picked: the maker's page names plastic in the lid
Contigo, Kids Straw Stainless Steel Water Bottle with AUTOSPOUT Lid
Béaba
Maker names no material, or only some partsStainless steel straw cup 250 ml: "Made of premium 316 stainless steel"; "DOUBLE WALL STAINLESS STEEL"; "ZERO LEAKS: open or closed, it does not leak thanks to its valve and its waterproof flap". The straw, valve and flap materials are not named, and there is no BPA, lead or testing line.
- Where we read it
- Béaba's global site (beaba.com), €25.00, age "8 - 36 month"; its US site would not load for us, and the global site says it is a showcase where products cannot be bought
Where it landed: Not picked: the materials of the straw and valve are not stated, and we read the global page, not the US one
Thermos
Maker names no material, or only some parts10oz FUNtainer Sippy Spout Water Bottle: "Soft sippy spout", "Double-Wall Vacuum Insulation | Stainless Steel Interior & Exterior", "BPA-free components". The spout, lid and handle materials are not named.
- Maker's store, 2026-10-26
- $19.99, in stock, blue or pink; "Not for Hot Liquids"
- Recall history
- CPSC lists an April 2026 recall of about 8.2 million Thermos Stainless King food jars and Sportsman bottles for a stopper that can eject; it does not name the FUNtainer line, and we found no recall of the FUNtainer Sippy
Where it landed: Not picked: the Amazon listing we sourced (a 7 oz sippy with handles) is not on thermos.com, and the 10 oz FUNtainer Sippy we read names no spout material
Not evaluated: other makers of stainless kids' cups; a maker not named here is one we did not read. Philips Avent's and Dr. Brown's US sites list no stainless steel cup that we could find: see the FAQ.
What this page is, and what it is not
We have two other pages on cups. The cheat sheet on less-plastic sippy cups and bottles explains why steel sidesteps the plastic question and what to check on an insulated cup. The straw and open cup guide is about the stage, six to eighteen months. Our cheat sheet picks Munchkin for its sealing design; this page ranks on what each maker names. This page does one narrower job: for the stainless cups a parent actually finds when they search, it quotes what each maker's own page says about the part that touches the mouth, and says plainly when the page says nothing.
The three things to look for on the maker's page
- Is the lid, spout or straw named? "Silicone" is a material; "BPA-free" is only something it is not.
- Is the body single-wall or insulated? Insulated cups have a seal at the bottom that the pages we read do not describe.
- Does the page say anything about the outside? A color or print is a coating, and most pages are silent about it.
Which cup, by what you need
| You want | Our read | The catch |
|---|---|---|
| A cup labeled for 6 months and up | Klean Kanteen 12 oz Kid's Classic Sippy | The cap material is not named, the cap page lists "Leakproof: No", and the Sport Cap version of this bottle is not for children 3 and under |
| A cup that seals itself for a one-year-old | Munchkin Miracle 360, 12+ months | The product text does not name the lid or rim material, and it is insulated |
| The best-named materials, for ages 3 and up | Klean Kanteen 10 oz Kid's Cup with Straw Lid (top pick) | Not leakproof, by the maker's own line |
| The lowest price, for ages 3 and up | Zak Kelso | Spout named, lid not; no lead or BPA statement; dishwasher safe, hand wash recommended |
| The best-documented materials, bought from the maker | Pura Kiki, sold on the maker's own store | Its Amazon listing was not in stock on 2026-10-26; MadeSafe is the maker's claim |
A note on lead in stainless cups
Every CPSC recall of a stainless steel children's cup that we found is about lead. They differ in where. CPSC's page for Green Sprouts says the recalled bottles and cups' "bottom base can break off, exposing a solder dot that contains lead". Its page for CUPKIN says the cups "contain levels of lead that exceed the federal lead content ban", sold on Amazon.com and Cupkin.com, and does not say where in the cup. In November 2023 CPSC also posted four recalls of stainless children's cups sold exclusively on Amazon.com (Klickpick Home, Tiblue, PandaEar and LAOION), each because "the bottom exterior of the stainless-steel cups contains an accessible solder bead with levels of lead that exceed the federal lead content ban". None of these brands is on this page, and a recall of a brand says nothing about another's cups. Looking at the base of a double-wall cup (flush, no loose disc, no exposed solder) catches a failed seal. It cannot tell you what is in the metal, which is why we also search the brand on cpsc.gov/Recalls before we pick it. If a base looks wrong, stop using the cup and contact the maker.
What this page cannot tell you
We read pages, not cups. We did not test any cup, check any coating, or contact any maker, and a maker's page can lag the product. Where a page is silent, silence is not a finding. Prices and stock are Amazon's on 2026-10-26 and move. If your cup is not here, the three questions above are the way to read its page.
What a stainless cup can say without answering the question
- "Stainless steel" or "BPA-free" as the whole claim — Both can be true of a cup with a plastic lid, and "BPA-free" says nothing about the material that replaced BPA. On the pages we read, Munchkin's only safety line is "BPA-free", and Contigo's own page calls its lid "BPA-free plastic".
- An exterior color or print you cannot get a statement on — Most of the pages we read do not say what the colored outside is. Klean Kanteen calls its finish "Klean Coat" and, on one bottle's page, "a powder coat finish"; Pura says its bottle is "Paint-free" and sells interchangeable silicone sleeves. None of the pages publishes a test result for a coating.
- An insulated bottom you cannot see — Double-wall cups seal the space between the walls somewhere, and the maker pages we read do not say how. CPSC has recalled a stainless toddler cup over a lead solder dot under the base (see below), so look at the base of any double-wall cup before first use and now and then after.
- A cup bought by name from a seller you cannot identify — Four of CPSC's recalls of stainless children's cups over lead were of cups sold exclusively on Amazon.com (see below). Check who sells the cup, and search the brand on cpsc.gov/Recalls.
How we choose
A cup earns a pick here when the maker's own page, which we read on 2026-10-26, names the body as stainless steel and does not name plastic for the part that touches a mouth; its Amazon listing was in stock from a named seller that day; and we found no CPSC recall of that cup. Where a maker does not say what the lid is, we say so on the pick instead of filling the gap. We did not test any cup, taste, or contact any company.
- The maker's own page, read on the date shown, names the body as stainless steel
- Where a maker names the lid, spout or straw, the material is silicone or steel; a maker that names plastic is not picked. Where a maker names none, the cup can still be listed, with the gap stated on the pick, because we cannot tell whether silence means plastic
- Listed in stock on Amazon from a named seller on the date we checked, price stated with the date
- No CPSC recall of that cup found
- Where the maker states none of the above, the pick says so rather than rounding up
Every source we cite is checked against our criteria first — see how we check our sources.
What the research says
Child passenger safety technicians across the country report identifying one to two unregulated or counterfeit seats each month during routine safety checks.
— In 2026-02-07 testimony, Ben Hoffman, MD, CPST-I cited ...
Public testimony on counterfeit car seats, Oregon House Committee on Commerce and Consumer Protection — Oregon Legislative Information System (2026-02-07)
Car seat use reduces the risk for injury in a crash by 71-82% for children, compared with seat belt use alone
— In 2026-02-07 testimony, Ben Hoffman, MD, CPST-I cited ...
Public testimony on counterfeit car seats, Oregon House Committee on Commerce and Consumer Protection — Oregon Legislative Information System (2026-02-07)
A flexible 9-day road map for safely introducing top allergens
— Malina Malkani, MS, RDN, CDN told BenBella Books (distributed by Simon & Schuster), ISBN 9781637745359 that ...
Safe and Simple Food Allergy Prevention: A Baby-Led Feeding Guide to Starting Solids and Introducing Top Allergens — BenBella Books (distributed by Simon & Schuster), ISBN 9781637745359 (2024-11-12)
Sources
- Klean Kanteen 10oz Kid's Cup with Straw Lid — product page — Klean Kanteen
- Klean Kanteen Kid's Cup Straw Lid 2-pack — product page — Klean Kanteen
- Klean Kanteen 12oz Kid's Classic Sippy — product page — Klean Kanteen
- Klean Kanteen Kid Sippy Cap — product page — Klean Kanteen
- Munchkin Miracle 360 Stainless Steel Sippy Cup, 10 oz — product page — Munchkin
- Munchkin Cool Cat Stainless Steel Straw Cup, 8 oz — product page — Munchkin
- Zak Designs Kelso Insulated Tumbler, 12 oz — product page — Zak Designs
- Pura Kiki 11oz Sippy Bottle — product page — Pura
- Nuby Thirsty Kids REFLEX Stainless Steel Travel Canteen — product page — Nuby
- Nuby Thirsty Kids Flexstraw Stainless Steel Cup — product page — Nuby
- Contigo Kids Straw Stainless Steel Water Bottle with AUTOSPOUT Lid, 13 oz — product page — Contigo
- Contigo Reannounces Recall of 5.7 Million Kids Water Bottles Due to Choking Hazard (2020) — U.S. Consumer Product Safety Commission (how we check this source)
- Béaba Stainless steel straw cup 250 ml — product page (global site) — Béaba
- Thermos 10oz FUNtainer Sippy Spout Water Bottle — product page — Thermos
- Dr. Brown's Milestones Insulated Straw Cup, 2-pack — product page — Dr. Brown's
- Philips Avent toddler sippy cups — Philips USA — Philips
- Green Sprouts Recalls Toddler's Stainless Steel Bottles and Cups Due to Lead Poisoning Hazard — U.S. Consumer Product Safety Commission (how we check this source)
- Soojimus Recalls CUPKIN Stainless Steel Children's Cups Due to Violation of Federal Lead Content Ban — U.S. Consumer Product Safety Commission (how we check this source)
- Klickpick Home Recalls Stainless Steel Children's Cup Sets Due to Violation of Federal Lead Content Ban (sold exclusively at Amazon.com) — U.S. Consumer Product Safety Commission (how we check this source)
- Tiblue Stainless Steel Children's Cups Recalled Due to Violation of Federal Lead Content Ban (sold exclusively on Amazon.com by FENGM) — U.S. Consumer Product Safety Commission (how we check this source)
- PandaEar Recalls Stainless Steel Children's Cups Due to Violation of Federal Lead Content Ban (sold exclusively on Amazon.com) — U.S. Consumer Product Safety Commission (how we check this source)
- Stainless Steel Children's Cups Recalled Due to Violation of Federal Lead Content Ban (sold exclusively at Amazon.com by LAOION) — U.S. Consumer Product Safety Commission (how we check this source)
- Thermos Recalls 8.2 Million Stainless King Food Jars and Bottles Due to Serious Impact Injury and Laceration Hazards (2026) — U.S. Consumer Product Safety Commission (how we check this source)
- Ignite Recalls Kids Straw Tumblers Due to Risk of Ingestion (Bueno by Contigo, 2015) — U.S. Consumer Product Safety Commission (how we check this source)
- Klean Kanteen Recalls Water Bottle Spouts Due to Choking Hazard (2010) — U.S. Consumer Product Safety Commission (how we check this source)
Side by side
| Attribute | Klean Kanteen10oz Kid's Straw Cup | MunchkinStainless Steel Sippy Cup | Klean Kanteen12 oz Classic Kid's Sippy Bottle | Zak DesignsZaksaurus Kelso 12oz Stainless Steel Leak-Pro… |
|---|---|---|---|---|
| Why it's here | Our top pick | The sealing cup for a one-year-old | The youngest age line, with a material gap | The lowest price, with a silicone spout named |
| Price | $17.95 | $15.59 | $17.95 | $12.99 |
| Availability | In stock | In stock | In stock | In stock |
Common questions
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