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Customer reviews for Zak Designs 12-oz. Stainless Steel Double-Wall Tumbler for Kids with Straw, 2-Piece Set for
Zak Designs 12-oz. Stainless Steel Double-Wall Tumbler for Kids with Straw, 2-Piece Set
4.5 out of 5 stars
stars
315 ratings151 reviews
  1. 5 stars78% (246)
  2. 4 stars8% (26)
  3. 3 stars4% (14)
  4. 2 stars3% (8)
  5. 1 star7% (21)
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Showing 111-120 of 151 reviews
Mar 31, 2025
Lizzie
2 out of 5 stars review

Leaked everywhere

I bought this as a easter gift for my son.I am so glad that his tumblers broke recently and we need to open it. We have had it a total of two days out of box and a month in the house , it did not fall it was not bitten. Yet it leaks absolutely everywhere. My son absolutely adores it , but the problem is is that if he knocks it over within the 30 seconds it's tipped it leaves a puddle as if he has just dumped it. At first I thought it was straw placement since he would try to take them apart. However even after checking and redoing it it still leaks. I might as well give him a open lid cup

Helpful?15STGC91CF8P13566272598
reply from Zak Designs Customer Support

On behalf of the zak! family, we’re sorry that you weren’t 100% satisfied with this product. Please reach out to our amazing Customer Care Team at customerservice@zak.com , and we will do everything we can to remedy this for you.

Jun 27, 2022
MSW
5 out of 5 stars review

AMAZING!!

I bought these cups hesitant, but for the price I gave it a try. They are leak proof!. my toddler has throw on the floor so many times... the straw is wide enough to be able to wash it (with a thin brush of course) AND it keeps drinks cold during this Texas weather. I am buying another set to have as a back up in case we loose them or forget them in places because life is like that with toddlers! give it a try!

Helpful?15STGC91CF8P13566272598
reply from Zak Designs Customer Support

Hello from the Zak Consumer Care Team,<br /><br />Thank you so much for taking the time to leave us this review!

Mar 9, 2023
Vic
1 out of 5 stars review

Straws easily rip

Grey design but silicone straws rip from the top. Straws don’t appear durable.

Helpful?15STGC91CF8P13566272598
reply from Zak Designs Customer Support

Hello from the Zak Consumer Care Team,<br /><br />We apologize for the challenge you have had with your Zak product. We would like the opportunity to make this right. Please contact our Amazing Customer Care Team: customerservice&#64;zak.com.

Dec 1, 2025
Kristina
5 out of 5 stars review

I wish Blippi would restock. been waiting months.

Helpful?15STGC91CF8P13566272598
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.

Jan 1, 2026
KELBY
1 out of 5 stars review

leaks

I wanted to like them, but they leak if they lay on their side.

Helpful?15STGC91CF8P13566272598
reply from Zak Designs Customer Support

On behalf of the zak! family, we’re sorry that you weren’t 100% satisfied with this product. Please reach out to our amazing Customer Care Team at customerservice&#64;zak.com , and we will do everything we can to remedy this for you.

May 8, 2025
taylor
4 out of 5 stars review

Great until they aren't

These cups are great. Unfortunately after only a week, one of my valves is leaking and the cups/ characters are already scratched.

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reply from Zak Designs Customer Support

Thank you for your review. We always appreciate it when our valued customers let us know how we’re helping create everyday smiles.

Feb 5, 2022
unhappy buyer
1 out of 5 stars review

leaky cups

We have had these a month or so and the started out fine until they didn’t. The now leak no matter what we do. It is quite frustrating and we are about to just throw em out. Waste of money.

Helpful?15STGC91CF8P13566272598
reply from Zak Designs Customer Support

Hello from the Zak Consumer Care Team,<br /><br />We apologize for the challenge you have had with your Zak product. We would like the opportunity to make this right. Please contact our Amazing Customer Care Team: customerservice&#64;zak.com.

Jun 24, 2023
Jennp
2 out of 5 stars review

Pretty but...

They leak! Which is number one criteria for a toddler cup. They leak from the seal ring when tipped over for drinking. It's so annoying. 2 stars only because they are adorable and sturdy. But leaky

Helpful?15STGC91CF8P13566272598
reply from Zak Designs Customer Support

Hello from the Zak Consumer Care Team,‍‍<br /><br />We apologize for the challenge you have had with your Zak product. We would like the opportunity to make this right. Please contact our Amazing Customer Care Team: customerservice&#64;zak.com. ‍

Aug 2, 2022
Grams
2 out of 5 stars review

Zac Shark Cup

My 2yr old Grandson cup straw is broke…I took cup away from him because I was afraid he might bite the rest of the straw off and swallow it… Will not buy again…

Helpful?15STGC91CF8P13566272598
reply from Zak Designs Customer Support

Hello from the Zak Consumer Care Team,<br /><br />We apologize for the challenge you have had with your Zak product. We would like the opportunity to make this right. Please contact our Amazing Customer Care Team: customerservice&#64;zak.com.

Nov 16, 2021
Sybil
5 out of 5 stars review

Great job kids

[This review was collected as part of a promotion.] I got these cute cups because they had Yoda on them with a straw. My 6 year old grandson always wanted to take his drink with him in the bedroom so he could play his games. I dreaded hearing "can I have a paper towel " because I knew that meant he had spilled something. Since I got these two tumblers I don't have to worry about the spills, or leaks, and keeping the 12 Oz. cold or hot. We are both happy !

Review from Zak Designs
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