Zak Designs Gabby's Dollhouse Kelso Toddler Cups For Travel or At Home, 15oz 2-Pack Durable Plastic Sippy Cups With Leak-Proof Design is Perfect For Kids Cakey Cat, Mercat

These are probably the best sippy cups I have bought for my toddler. I have about 5 of them and have not had one single leak.I will say that they do have to suck a little harder to get the liquid out. And since the straw is wider they will consume more faster but they get used to it pretty quickly. Do not sleep on the Zak Cups

These toddler cups have been a staple in our home, we mainly use them for milk, and they’ve worked out great. They’re the perfect size for little hands, super easy to clean, and have held up really well through daily use and countless dishwasher cycles. I also appreciate that they’re simple to assemble with no extra pieces to misplace.After heavy use, we’ve noticed a bit of leaking here and there, but it’s minimal and expected with the amount of wear they’ve had. Overall, they’re still our go-to cups and have made milk time much easier. Definitely a 5-star buy for any toddler household!

After this purchase, I’ve completely fallen in love with the Zak brand! These tumblers are not only super cute, but also functional and truly spill-proof—perfect for toddlers. I do recommend removing all parts when washing and hand washing the cups to help preserve the design, as it may wear off over time. Zak offers so many fun styles, and these cups really hold up well. Absolutely recommend!

These are extremely leak-proof in terms of tipping and dropping, but they leak as they warm up. If you put cold liquid in and let it warm up from ambient temperature, you'll eventually see water sitting on top of the lid. After time, it'll run down the side. I don't understand why this happens since it should be able to vent and equalize pressure. I call them micro-slits, but there may be another term for it. Either way, a micro-slit exists in the straw itself and on the lid in the rubber area next to the straw. This is how they made it leak-proof while still letting air in/out. Overall, we're very happy with these. Easy to assemble, disassemble, and clean. I like the large straw diameter for cleaning too. I'd give them a 4.5 out of 5.

We love our Zack cups! Always on the go and they are great they are leak proof. Love all the different designs

The only leak proof cup I’ll ever buy! Love love love it

These are awesome! First straw cup I’ve used for my 1 year old that doesn’t leak. He loved it and took to it right away. It holds a good amount of water. Closes easily and he can’t open it! It holds up even when he chucks it (which lets be honest he does 100x a day).

Liked it however if your child is just learning to use straw type cups don't get these. My child would get frustrated and throw the cuz because he is used to tilting his other sippy cup upward,which caused this cup to crack. At first I thought the cup was leaking from the lid part but it kept leaking so after examination I saw that it cracked.im not blaming them because it didn't come cracked but like I said if your trying to get your child to drink from these without ever trying any other straw type cups with them then DO NOT GET THESE ,because if they get frustrated and throw it ,that's your money down the drain,I barely had this for a week😐.