Best Plastic-Free Sippy Cups & Toddler Cups
Last reviewed September 2026
Transition cups for toddlers - spouted, straw, and trainer cups.
The short answer
The pediatric advice is to skip the sippy entirely, and the ezpz Tiny Cup is built for that - one piece of silicone, no valve, no straw, small enough that spills stay small. If you need a lid, Klean Kanteen's Kids Cup keeps the whole path steel and silicone via a stainless straw; avoid the separately sold Classic Sippy Cap, which is polypropylene. Pura Kiki remains the least-plastic system overall, steel body and collar with a silicone top. The one to know about is the GrosMimi: parents love the straw and the leakproof seal, but the body and lid are PPSU, so the drink sits in plastic.
Why plastic matters in sippy cups & toddler cups
The recurring parent complaint: "BPA-free" sippy cups still have polypropylene valves, plastic straws, and plastic lid mechanisms in direct contact with the drink, plus they get dishwashed and left in hot cars daily. Only a handful of lines are genuinely plastic-free, so the research burden on parents is high - exactly the gap this site fills. (Pediatric guidance to skip sippies for open/straw cups is worth mentioning as context.)
What to look for in sippy cups & toddler cups
- The valve is the hidden part - ask what makes it leak-proof
- Stainless body + silicone spout/straw is the realistic best case
- Handles and weighted straws add more parts to check
- Open steel/glass training cups are the simplest truly plastic-free path
Recommended sippy cups & toddler cups
Every product here we'd actually suggest — best-in-class picks first, then the rest by how plastic-free they are.
Kid's Cup with Straw Lid
Recycled-steel cup with a stainless steel straw and silicone lid/flex-tip - no plastic in the drink path, unlike the older PP sippy cap.
Kiki
The rare 100% plastic-free bottle system - 18/8 stainless body and steel collar, only the interchangeable top is medical-grade silicone.
Mason Jar Bottle System
Turns a regular-mouth glass mason jar into a bottle or sippy - liquid only ever touches glass, steel, and silicone.
Tiny Cup (Open Training Cup)
A one-piece 100% food-grade silicone open training cup - no valve, no straw, no plastic; the "skip the sippy" option pediatricians favor.
PPSU Straw Cup
A performance-favorite Korean straw cup parents love for its soft silicone straw and leak-proof seal - but the cup body and lid are PPSU plastic, so the drink still sits in a plastic vessel.
| Product | Rating | Touches your food | Price | Made in |
|---|---|---|---|---|
 Klean Kanteen Kid's Cup with Straw Lid Best Straw Cup | Silicone ·Stainless Steel | $ | China | |
 Pura Kiki Best Overall / Least Plastic | Silicone ·Stainless Steel | $ | China | |
 Mason Bottle Mason Jar Bottle System Best Budget / DIY | Silicone ·Soda-Lime Glass ·Stainless Steel | $ | USA | |
 ezpz Tiny Cup (Open Training Cup) Best Overall (Open Cup) | Silicone | $ | China | |
 Grosmimi PPSU Straw Cup Best Straw Performance (with a plastic caveat) | Plastic ·Silicone | $ | South Korea |
Sippy cups & toddler cups to avoid
Popular options that look plastic-free but aren't — and whole categories worth skipping.
Munchkin Miracle 360 Trainer Cup 10oz
For a truly plastic-free trainer cup, choose the ezPz Tiny Cup (all-silicone open cup) or the Pura Kiki with a silicone sipper spout.
Klean Kanteen Classic Sippy Cap
The steel cup is great, but this specific sippy cap - the default on the 12oz Classic - is polypropylene (#5), and the spout you drink through is the plastic part. Klean Kanteen's own silicone Straw Lid or Sippy Lid on the Kid's Cup fixes this, which is why we pick the silicone-lid version and flag the PP cap here.
Elk and Friends Stainless Kids Cup
A 304 steel cup with silicone straws and a silicone sleeve - most of it is right - but the lids (both the straw lid and the storage lid) are BPA-free plastic, and the straw-lid is what the child drinks through. The steel body and silicone straw are good; the plastic lid in the drink path is the compromise, so it sits behind the all-silicone/steel picks.
Lifefactory sippy-cap conversion
Popular way to carry a glass Lifefactory bottle into toddlerhood, but the sippy cap and its ring are polypropylene, so the toddler drinks through plastic. The glass body is nice; the plastic spout is the same problem most "BPA-free" sippies have. A steel or silicone-spout cup avoids it.
Munchkin Any Angle / Weighted Straw Cup
One of the most widely-available straw cups, and a reasonable performer, but the cup, lid, and straw are BPA-free plastic - the drink sits in and flows through plastic. Fine as a mass-market, easy-to-find option, but it's the plastic-vessel case this category exists to flag; a stainless straw cup or the steel/glass picks keep the drink off plastic.
"BPA-free" polypropylene valve sippies (generic)
The category's core trap: most mainstream "BPA-free" sippy and straw cups rely on a polypropylene valve and/or a plastic straw and lid mechanism in direct contact with the drink, and they get dishwashed and left in hot cars daily. BPA-free is not plastic-free - the valve is the hidden part. Ask what makes a cup leak-proof; if the answer is a plastic valve, it belongs here.
Common questions about sippy cups & toddler cups
Is there a fully plastic-free option for sippy cups & toddler cups?
Not completely. None of the 5 sippy cups & toddler cups we recommend is free of both plastic and silicone. Klean Kanteen Kid's Cup with Straw Lid, Pura Kiki, Mason Bottle Mason Jar Bottle System and ezpz Tiny Cup (Open Training Cup) come closest, being plastic-free apart from silicone parts such as seals and gaskets.
Which sippy cups & toddler cups do you recommend most?
Of the 5 sippy cups & toddler cups we recommend, Klean Kanteen Kid's Cup with Straw Lid takes Best Straw Cup, Pura Kiki takes Best Overall / Least Plastic and Mason Bottle Mason Jar Bottle System takes Best Budget / DIY.
Which sippy cups & toddler cups should you avoid?
Among the sippy cups & toddler cups we have reviewed, we do not recommend Munchkin Miracle 360 Trainer Cup 10oz. We also suggest skipping Klean Kanteen Classic Sippy Cap, Elk and Friends Stainless Kids Cup, Lifefactory sippy-cap conversion, Munchkin Any Angle / Weighted Straw Cup and "BPA-free" polypropylene valve sippies (generic).
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