Zak Designs Kelso 15 oz Tumbler 2pc Set, (Campout) Leak-Proof Screw-On Lid with Straw Made of Durable Plastic and Silicone, Perfect Cup Bundle for Kids

My favorite cups for my toddler. Super easy to clean with only a few parts. The gabby dollhouse design and bright colors are something my little one loves. Light weight to throw in a bag for outings and has a good seal that rarely spills. Good price for two really good cups. My toddler finds it easy to drink out of the cup with milk water or juice. I don’t recommend for thicker drinks like smoothies functions well with thin liquids.

These were a repurchase for my son. He takes these to school and uses them around the house every day. They do not leak (but I don't recommend putting anything carbonated in them) and have held up well despite him not being easy on things. They are also a good value compared to many cups, since we tend to purchase several so we can wash daily.

My twin girls are transitioning from bottles and soft spout sippies were proving difficult. These have worked perfectly for 2 out of 2 babies, they were able to use the straw almost immediately. I appreciate being able to purchase a two-pack of anything baby related now that I have twins. The price wasn’t bad either!!

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.

Love these cups for my two year old! He loves spidey and these were the perfect cups. They are spill proof. We had a very mild leak from milk that was left at the top of the straw. I feel like we got a good price for two cups.

2 year old nephew approved. He likes to knock them over or throw them around and we’ve had no damage to them or spills. They’re lightweight so it doesn’t hurt if he drops them on your feet. Easy to clean too

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

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😐.