Pura

Pura Kiki Stainless Steel Sippy Cup

Plasticproof Great $$$Our price tier

100% stainless steel body with medical-grade silicone spout. Grows with your child via interchangeable tops — from infant to toddler.

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Stainless body + silicone — no plasticWarm milk never sits against plastic that can leach.

Medical-grade silicone spoutNo BPA, and no BPS-style plastic substitutes.

Rated on material, not marketing

See exactly how we verify this

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Why it's safe for your family

100% stainless steel body — no plastic interior surfaces. Your child's drink never touches plastic at any point.
Medical-grade silicone spout/nipple — the only non-metal component is medical-grade silicone, which does not leach chemicals or shed microplastics.
No plastic interior surfaces — unlike most sippy cups that have plastic linings, Pura Kiki is stainless steel throughout.
Grows with your child — interchangeable tops mean one bottle works from infant nipple to sippy spout to sport cap. Buy once.

Is this really plastic-free? Yes — and here's why

"BPA-free" plastic can still leach BPS and similar hormone-mimicking compounds, especially with warm liquids. This cup removes plastic from the equation: a #304 stainless steel body with a medical-grade silicone spout — neither of which leaches those compounds into your child's drink.

What this cup is made of: food-grade stainless steel and medical-grade silicone. No plastic against the liquid your child drinks.

Quick specs

Material

#304 Stainless Steel

Capacity

11oz

Silicone

Medical-grade

Key Feature

100% plastic-free

What to avoid instead

Plastic sippy cups — even those marketed as "BPA-free" — can still leach harmful chemicals into your child's drinks. Heat from warm milk or dishwasher cycles accelerates the breakdown.

Research finding

Even BPA-free plastic can leach BPS and other endocrine disruptors, especially with warm liquids. These chemicals mimic hormones in your child's developing body. Stainless steel eliminates this risk entirely.

How we verify — and what we don't

Straight answer: we're a research team, not a testing lab. Here's exactly what our rating is based on — and what it isn't — so you can weigh it honestly.

What we check

What the product is made of, from the maker's own specs and product listing.
Whether any part that touches you or your food uses PTFE, PFAS, plastic, or a coating that can degrade.
Peer-reviewed research on how that material behaves when heated, scratched, washed, or worn.
Known failure modes — how the product actually breaks down in a real home.

What we don't do

We have not chemically tested this specific unit in a lab.
We don't take payment to rate a product higher — there is no sponsored placement.
We don't show star ratings or "trusted by thousands" counts we can't stand behind.

What gets a product rejected

Anything that adds a known microplastic, PFAS, or off-gassing source — a non-stick coating, a plastic surface against food or skin, vinyl/PVC — is downgraded or cut. We only list what clears that bar.

Common questions

Does it keep drinks warm/cold?

The Pura Kiki is single-wall stainless steel, so it doesn't insulate like a thermos. However, stainless steel naturally keeps drinks cooler longer than plastic. For most toddler use — water, milk, juice — it works perfectly.

Is it heavy for toddlers?

At 11oz capacity, it's comparable in weight to a filled plastic sippy cup. The stainless steel body adds minimal weight. Most toddlers adapt immediately — and the silicone sleeve (sold separately) makes it easy to grip.

Are replacement spouts available?

Yes — Pura sells a full range of interchangeable silicone tops: slow-flow nipple, medium-flow nipple, sippy spout, straw top, and sport cap. This means one bottle grows with your child from newborn through preschool. All tops are medical-grade silicone.