YETI Rambler Jr Kids Bottle (12oz, Straw Cap)

Name: YETI Rambler Jr Kids Bottle (12oz, Straw Cap)
Brand: YETI

Not recommended

A durable 18/8 steel kids bottle, but the Straw Cap is BPA-free plastic and the child drinks up through a plastic straw and cap - not plastic-free despite the premium steel reputation.

The verdict: Minimal plastic contact

The Rambler Jr body is kitchen-grade 18/8 stainless steel, but the Straw Cap the child actually drinks from is plastic. The cap is BPA-free plastic, and the straw the water travels up is plastic, so the entire drink path a kid's mouth meets is plastic. Included as a corrective: parents reach for YETI on its steel reputation, but the kids Straw Cap is exactly where the plastic is - the one part a child's mouth actually meets.

Verification: Manufacturer confirmed · Last reviewed July 6, 2026

Lead safety: Lead found, not in contact path

Independent XRF testing of a YETI Rambler 20oz Tumbler (a different model, same double-wall vacuum-insulated construction as this bottle) found the body itself lead-free, but a lead-based sealing dot under the stainless bottom cap — used to seal the vacuum layer, a construction method common across insulated steel drinkware. The dot is encapsulated under the base and not in the drink path, but is a real concern if that base coating wears or chips. This specific 12oz Rambler Jr has not itself been tested.

Verification: Community reported

lab-test https://tamararubin.com/2018/12/pink-yeti-rambler-20-oz-tumbler-lead-free-in-all-accessible-components/
XRF test of a Pink YETI Rambler 20oz Tumbler - lead-free in accessible components, leaded sealing dot under the bottom cap
lab-test https://tamararubin.com/2020/07/this-is-what-a-leaded-sealing-dot-looks-like-on-a-stainless-steel-water-bottle-please-read-the-full-post-if-you-have-questions/
explains the leaded sealing dot construction common to insulated stainless bottles

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What it's made of

Part	Material	Food contact
bottle body (double-wall insulated) kitchen-grade 18/8 stainless steel body	Stainless Steel 304 / 18-8	Yes primary
Straw Cap BPA-free plastic cap; leakproof when closed	Plastic other / unspecified	Yes primary
straw plastic straw the child drinks up through	Plastic other / unspecified	Yes primary
cap gasket	Silicone	Yes seal

The YETI Rambler Jr is a tough 12oz kids bottle - heavy 18/8 stainless steel in a stainless armor, built to survive being dropped daily. The Straw Cap is leakproof when closed and dishwasher safe, and the child sips up through a straw. It's a durable, premium option that holds up to hard toddler use.

Pros

Very durable insulated 18/8 steel body; leakproof Straw Cap when closed
Cap is labeled BPA-free and is dishwasher safe

Cons

Premium steel reputation obscures the plastic sip path - see the rating

Notes

Kids ingest more microplastics per body weight, which is why the plastic sip path is the concern here

Categories: Kids Water Bottles

Sources

Every material claim above is backed by these. This is the scattered info we centralized.

manufacturer https://www.yeti.com/drinkware/hydration/kids-bottle-12oz.html
18/8 stainless steel body with a BPA-free, dishwasher-safe, leakproof Straw Cap
manufacturer https://www.amazon.com/YETI-Rambler-Kids-Bottle-Straw/dp/B07VKBSB4P
Rambler Jr 12oz kids bottle with Straw Cap; all YETI drinkware is BPA-free

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