Thinkbaby Thinkster of Steel Straw Bottle
Steel-bodied toddler straw bottle with a soft silicone straw - but the collar and valve the water passes through are polypropylene.
The verdict: Minimal plastic contact
The bottle base is ultra-polished 304 stainless steel and the straw is medical-grade silicone, but the cap, collar, and spill-resistant valve assembly are polypropylene, and water passes through that plastic valve on its way up the straw. So while the body is steel and the mouth touches silicone, plastic is still in the water path. It is less plastic than a fully plastic toddler bottle, but not silicone-only. Best for the 16-48 month range where a soft, spill-resistant silicone straw matters.
What it's made of
| Part | Material | Water contact |
|---|---|---|
| bottle body ultra-polished 304 (18/8) stainless steel | Stainless Steel 304 / 18-8 | Yes primary |
| straw extra-soft medical-grade silicone straw with cross-cut anti-spill tip | Silicone | Yes primary |
| cap / collar / valve BPA/BPS/phthalate-free polypropylene; water passes through the valve assembly | Polypropylene PP, #5 | Yes primary |
Thinkbaby's stainless-steel toddler straw bottle - a 304-steel body with a soft, extra-flexible silicone straw and a cross-cut anti-spill tip. A swivel cap flips the straw down to close it against leaks. It's sized for the 16-48-month range where a soft, spill-resistant straw matters, and it's marketed hard on being free of BPA, BPS, phthalates, and PVC. Sold in a 9oz size, with replacement silicone straws in 3-packs.
Pros
- Steel (304) body with a soft, replaceable medical-grade silicone straw
- Spill-resistant cross-cut straw and swivel cap for toddlers
- Free of BPA, BPS, phthalates, PVC, and similar plasticizers
Cons
- Silicone straws need replacing every few months
- Single-wall (non-insulated); handles/base add plastic parts on some versions
Notes
- Water-through-valve contact with polypropylene is inferred from the closure design (community/vendor-reported), not from an explicit teardown
Common questions
Does the Thinkbaby Thinkster of Steel Straw Bottle have plastic in it?
Yes. On the Thinkbaby Thinkster of Steel Straw Bottle, the cap / collar / valve is plastic and sits in the water path. The rest of what touches your water is stainless steel.
What is the Thinkbaby Thinkster of Steel Straw Bottle made of?
Part by part, the Thinkbaby Thinkster of Steel Straw Bottle is: bottle body — stainless steel; straw — silicone; cap / collar / valve — polypropylene.
Does the Thinkbaby Thinkster of Steel Straw Bottle have silicone in it?
Yes — the straw is silicone on the Thinkbaby Thinkster of Steel Straw Bottle. That is a primary contact surface, not just a seal — your water is in direct contact with it.
Where is the Thinkbaby Thinkster of Steel Straw Bottle made?
The Thinkbaby Thinkster of Steel Straw Bottle is made in China.
Categories: Kids Water Bottles
Sources
Every material claim above is backed by these. This is the scattered info we centralized.
- manufacturer https://thinksun.com/products/thinkbaby-of-steel-85 base is ultra-polished 304 stainless steel; straw is medical-grade silicone; all plastic components are polypropylene
- review https://carobambino.com/products/stainless-steel-thinkster-straw-bottle retailer detail confirming steel base, polypropylene cap/collar, and food-grade silicone straw
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