Tommee TippeeSuperstar Straw Insulated Sippy Cup for Toddlers, INTELLIVALVE 100% Leak-Proof & Shake-Proof | BACSHIELD Antimicrobial Technology (9oz, 12+ Months, 2 Count), Pink and Warm Gray

The straw gets broken as kids tend to bite it and my son has biten the top part off. I have a suggestions to TT to go green and to produce replaceable straw changes like Avent does. I don’t need to change the bottle itself, just a straw and I can’t find it anywhere. If you have one, please respond. Thanks.

These are leak proof open or closed and I absolutely love them. They work better than any other brand because my 1 year old can actually suck through the straw easily and throw it around without any leakage. I won't buy any other brand for this type of cup.

We love these. They are spill proof and easy to use. I was skeptical because of some the other reviews but my twins (21 months) can drink out of them no problem. Knocked off 1 star because I personally think they are ugly

I like the durability and design of these sippy cups. Daycare recommended my grandson to use sippy cups with straws. It took him about a week to adjust to the straw.

My children love these. We only use them for water because straws can be tricky to keep clean, but the cups do come apart fully and all parts are top rack dishwasher safe. These are as close to indestructible as you can get when it comes to products marketed for toddlers. I’m convinced all “durable” products could do with some toddler testing. As far as leaks it functions seamlessly provided that you have it put together properly. I always double check that the straw is pushed in all the way before sealing it. My two year old takes it to bed with her and I am never worried about it making a mess. They fit perfectly in our car seat and stroller cup holders, keep water cold, and hold a lot of liquid. Very happy customer! I would recommend to any mom looking to switch from bottle to straw. My one year old is able to hold and drink from it just as easily as my two year old.

I love these. The designs are super cute, the insulation holds up in hot weather, and they are easy to clean. My only complaint would be they are about the same size as the cup holder in the car seat, so its a snug fit and my daughter gets frustrated at trying to get them out. Also, she still prefers handles, but she's 2.