Brand database
Kids Water Bottle Microplastic Database (2026)
14 kids water bottle brands sold in the US, ranked for daily-use microplastic risk. The body material is the dominant variable — 18/8 stainless steel is essentially zero microplastic shedding, Tritan is cleaner than other plastics but still polymer, and polypropylene sippy cups (microwaved or dishwasher-cycled hundreds of times) shed the most. The lid + straw plastic is the secondary variable.
| Brand | Body | Lid | Risk |
|---|---|---|---|
| Klean Kanteen Kid | 18/8 stainless | Stainless sport cap (some plastic SKUs) | Low |
| Hydro Flask Kids | 18/8 stainless | Plastic straw lid | Medium |
| Camelbak Eddy Kids | Tritan (BPA-free plastic) or stainless | Plastic Eddy bite-valve lid | Medium |
| Thermos Funtainer | 18/8 stainless | Plastic pop-up straw lid | Medium |
| Contigo Kids | 18/8 stainless (most SKUs) | Plastic AutoSpout | Medium |
| Owala Kids | 18/8 stainless | Plastic FreeSip kids lid | Medium |
| Stanley IceFlow Kids | 18/8 stainless | All-plastic sippy spout | Medium |
| YETI Rambler Jr | 18/8 stainless | Plastic Chug Cap (mostly stainless interior) | Low |
| Pottery Barn Kids Mackenzie | 18/8 stainless (typically) | Plastic straw lid | Medium |
| Simple Modern Summit Kids | 18/8 stainless | Plastic flip-straw lid | Medium |
| PlanetBox Bottle | 18/8 stainless | Silicone + stainless | Low |
| LunchBots Kids | 18/8 stainless | Silicone-sealed stainless | Low |
| Nalgene OTG Kids (Tritan plastic) | Tritan (BPA-free plastic) | Plastic spout | High |
| Take & Toss Sippy Cups | Polypropylene (#5 plastic) | Polypropylene | High |
Methodology
- Body material: pulled from manufacturer spec pages and product packaging. 18/8 (304) stainless is the industry standard for food-grade kids drinkware.
- Lid + straw plastic: identified from manufacturer photo + spec disclosure. “All-plastic” lids have the most water-contact plastic surface; stainless Chug-style lids have the least.
- Risk tier: Low = stainless body + minimal lid plastic. Medium = stainless body + plastic lid / straw that contacts water during drinking. High = full-plastic body (Tritan, PP), where the entire drink surface is polymer.
- Per-sip estimate: There is no peer-reviewed kids-bottle-brand-specific microplastic count. The risk tier is a material-extrapolation from polymer chemistry + temperature exposure + dishwasher wear, not a measured number. The MicroPlastics iOS app combines these inputs into a 0-100 score per specific SKU.
Primary sources
- ASTM International (2023). ASTM A240 — Standard Specification for Chromium and Chromium-Nickel Stainless Steel. (Source for 18/8 / 304 stainless food-grade definition.)
- Eastman Chemical Company (2023). Tritan Copolyester — Food Contact Safety Data. Eastman.
- Li D, Shi Y, Yang L, et al. (2020). Microplastic release from the degradation of polypropylene feeding bottles during infant formula preparation. Nature Food. (Source for polypropylene drinkware shed rates at hot/dishwasher conditions.)
- Manufacturer disclosure: Klean Kanteen, Hydro Flask, Camelbak, Thermos, Contigo, Owala, Stanley, YETI, Simple Modern, LunchBots, PlanetBox, Nalgene — all material specs as of June 2026.
Scan a kids water bottle before the back-to-school run
Use the MicroPlastics iOS app to scan any kids water bottle on the shelf or one you already own — 0-100 risk score per SKU with the cleaner alternative.
Download on the App StoreData compiled by the MicroPlastics Research Desk. Last reviewed: June 29, 2026. Submit a source dispute or correction via the contact page.