Thermos FUNtainer Kids Water Bottle
The ubiquitous insulated steel kids straw bottle - but the lid is polypropylene and the straw stem is LDPE, so water still travels through plastic.
The verdict: Minimal plastic contact
The body is double-wall stainless steel, but the drink path is not plastic-free: the push-button lid is polypropylene, the straw stem is LDPE, and only the straw's spout tip is silicone. So water passes through plastic (lid and straw stem) on its way up. It is far better than an all-plastic toddler bottle and it is genuinely everywhere and leakproof, but it is minimal-contact, not the silicone-only bottle its steel-body reputation implies. We document it as the widely-available baseline, not as a plastic-free pick.
Verification: Manufacturer confirmed · Last reviewed
What it's made of
| Part | Material | Food contact |
|---|---|---|
| bottle body (double-wall insulated) BPA-free double-wall stainless steel; grade unspecified by manufacturer | Stainless Steel grade unspecified | Yes primary |
| push-button lid polypropylene lid; the pop-up straw mechanism sits in the drink path | Polypropylene PP, #5 | Yes primary |
| straw stem LDPE (low-density polyethylene) straw stem - water travels up through this plastic tube | Plastic other / unspecified | Yes primary |
| straw spout / tip silicone spout tip on the straw | Silicone | Yes primary |
The FUNtainer is the default kids straw bottle in most of America - sold in every big-box store and pharmacy, cheap, dishwasher-safe, and covered in licensed characters. You push a button and a straw pops up; it snaps closed leakproof for a bag. The insulated stainless body keeps drinks cold for ~12 hours, and it's tough enough to survive daily toddler abuse. Sold in 12oz and 14oz straw versions.
Pros
- Genuinely everywhere - easy to buy, easy to replace, cheap
- Insulated stainless body keeps drinks cold ~12h
- Leakproof push-button lid; straw is removable for cleaning
- Durable and kid-proof
Cons
- Straw and small valve parts need a narrow brush to clean well
- Steel-body reputation oversells how plastic-free it actually is - see the rating
Notes
- Common sizes: 12oz and 14oz straw bottles
Categories: Kids Water Bottles
Sources
Every material claim above is backed by these. This is the scattered info we centralized.
- manufacturer https://thermos.com/pages/faq Thermos FAQ states the FUNtainer lid is polypropylene, the straw stem is LDPE, and the spout is silicone; all BPA-free
- manufacturer https://thermos.com/products/funtainer-r-water-bottle-12oz 12oz FUNtainer - double-wall stainless body, silicone straw, push-button lid, cold ~12h
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