I hard The Costco brand and these are much better. The straw is silicon and everything comes apart. Easy to wash. No spills. 4 simple pieces. The straw is large so it is good for smoothies too and doesn’t melt or bend in the washing machine

I absolutely love the Zak Designs Kelso Tumbler Set! As a toddler mom, finding spill-proof options is a must, and these tumblers deliver! The underwater theme is super cute and colorful, making my little one excited to drink from them. The 15 oz size is perfect for juice, water, or smoothies—just the right amount for my toddler. The screw-on lid is a game changer; it’s truly leak-proof, so I don’t have to worry about messes in the car or at home. Plus, the built-in straw is easy for tiny hands to manage. They’re also made from non-BPA materials, which gives me peace of mind knowing my child is safe while enjoying their drinks. Final Thoughts: If you’re looking for durable, stylish, and practical tumblers for your toddler, I highly recommend the Zak Designs Kelso Tumbler Set! They make hydration fun and hassle-free for both me and my little one!

These are the best cups once your baby knows how to use a straw. They do not leak / it takes a lot of effort to get them to leak. They come apart so easily to throw in the dishwasher. We had done a lot of research and landed on these and since have tried 5 other cups, none of which compared to these.

Cute gift and recommended for toddlers kids transitioning out of sippy cut because it will drip if turned over.

Perfect for my 18 month old. Very durable, easy to clean and most importantly spill proof

Love this cup and leak proof!

My kids love the cups! They do not seem to have any trouble drinking from them. They do leak if dropped on the floor but not too bad. Affordable price

Play Video Great cups—relatively spill-proof, easy to clean, and toddler-approved. However, the design wears off quickly, even with handwashing (within a week). Still worth it for the practicality!

Finally found a sippy cup that doesn't leak. So happy with this purchase!

We love these cups in our house! Easy to take an apart to clean and pop into the dishwasher and don’t spill. Lots of fun designs to choose from.

My 2 year old grand daughter loved her Minnie Mouse Zack cup. She can sip well with no leaks.

Play Video For the abuse my kid puts this through it’s holding up well. He chews on the straw, throws it across the room, has kicked it across cement driveways, and it goes in the dishwasher. And the image is holding up well considering. Mild leak but at this point it’s probably due for a straw replacement after all it’s been through. I don’t fault it at this point. Before for it was absolutely leak proof and worth it!

My oldest drinks way more water out of this cup than any other. They’re so easy to use, my one year old twins would steal his so now they have their own. Nice big straw that’s easy to clean and adorable patterns! We love these cups and have had zero spills! Only thing I don’t love as a busy mom is that I have to hand wash these as the patterns don’t hold up to the dishwasher but that’s minor! They are still our most used kids cups.