Brand database
Kids Water Bottle Microplastic Database (2026)
13 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 | PP sport cap as shipped (age 4+); Steel Loop Cap sold separately | 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 |
| 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, YETI, Simple Modern, LunchBots, PlanetBox, Nalgene, all material specs as of June 2026.
Choosing one
This table is the audit. For picks by age and use, see the best kids water bottles without microplastics; for toddlers still on sippy cups, the sippy cups and toddler dishes guide; and for the rest of the school kit, the back-to-school guide.
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.