Zak Designs Kelso 12oz Zaksaurus Vacuum Insulated Stainless Steel Sippy Cup for kids
Zak Designs 12oz Kelso Toddler Cups For Travel or At Home, Vacuum Insulated Stainless Steel Sippy Cup With Leak-Proof Design is Perfect For Kids (Zaksaurus)
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Zak Designs 12oz Kelso Toddler Cups For Travel or At Home, Vacuum Insulated Stainless Steel Sippy Cup With Leak-Proof Design is Perfect For Kids (Zaksaurus)

191 ratings
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Actual ColorDinosaur

Key item features

  • SIZE AND MATERIAL: The drinking tumbler has a 12-ounce capacity and measures 3.2 inches in diameter and 6.77 inches tall. It's made of food-grade, 18/8 stainless steel with a silicone spout. The lid is dishwasher safe and can be disassembled for cleaning, while the tumbler should be washed by hand. Should not be microwaved.
  • VACUUM INSULATED: The water tumbler has vacuum insulation to keep drinks cold for up to 10 hours. The double-wall construction also prevents condensation from forming on the outside, eliminating messy water rings.
  • LEAK-PROOF DESIGN: The silicone straw spout has a built-in valve that allows liquid to flow when drinking and prevents accidental spills when the tumbler is tipped over. The straw is also soft and comfortable for kids to drink from.
  • AT HOME OR ON THE GO: The straw tumbler is suited for travel, since it won't leak and fits in car cup holders while keeping drinks easily accessible. It's also great for drinking beverages at home without worrying about stains or nearby electronics.
  • LIFESTYLE: Zak Designs drinkware makes hydration fun! This cute tumbler is a great gift for any young one or kids just graduating from sippy cups. The tumbler is fully reusable--no more disposable cups--and a fun addition to the daily routine.

About this item

Product details

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Customer ratings & reviews

4.8 out of 5 stars
stars
191 ratings45 reviews
How item rating is calculated
  1. 5 stars89% (170)
  2. 4 stars5% (10)
  3. 3 stars2% (3)
  4. 2 stars2% (3)
  5. 1 star3% (5)

Reviews summary

Pros

  • : The stopper and valve provide spill-resistant flow.
  • : Features a valve that prevents leaks most of the time.

Neutral

  • : The material insulates well but rusts if the rim chips.
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Showing 1-3 of 45 reviews

Jun 3, 2026
Reviewer name: Ashley
Top Reviewer
Item details
Color: Mickey
Sold byZak Designs, Inc.Delivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Finally, a toddler cup that actually doesn't leak!

We have gone through so many toddler cups, but the Zak Kelso cup is a game-changer. It genuinely keeps drinks cold for hours thanks to the stainless steel insulation, and it has survived multiple drops without spilling a drop. The Mickey Mouse design is an absolute favorite for my toddler, too. Easy to clean and perfect for car rides!

Helpful?651DBD7X69521461125489
reply from Zak Designs Customer Support

Our goal is to give our customers products that help create everyday smiles. Thank you for letting us know we are accomplishing that goal!

Oct 10, 2026
Reviewer name: Claudia
Top Reviewer
Item details
Color: Bluey
Sold byZak Designs, Inc.Delivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Recommended

This has been a very good cup for my grandson. He loves Bluey so this was a good buy. I haven't had any spills. Easy to clean and dishwasher safe.

Helpful?651DBD7X69521461125489
Sep 29, 2026
Reviewer name: Brittany
Item details
Color: Dinosaur
Sold byZak Designs, Inc.Delivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great cups for littles!

Helpful?651DBD7X69521461125489
reply from Zak Designs Customer Support

Our goal is to help create everyday smiles for our customers, but sometimes we know that we fall short of that goal. Please reach out to our amazing Customer Care Team at customerservice@zak.com, and give us a chance to bring that smile back for you.

Current price is Now $12.99
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was $15.99
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