Cheap to buy and that's the problem, they leak all over the place. I'd rather spend the extra money to buy something better.

I don't own one of these sippy cups but my daughter used one at a friends and it leaked all over. I think the hole was too large for her and she ended up getting all wet. I wouldn't go purchase them myself.

My daughter loves hers. It has spilled a few times and I wish the nipple wasn't so easy to pull off, especially with a curious kid!

After a few uses, these always leak. I was not happy with the quality at all.

they Leak after the first use for me. I don't really like them at all. Very unhappy.

Wasn't a fan of the nuby sippy cups, found they always leaked from the nipple.

They're OKAY... they stay leak proof until your child continuously bites down on the nipple, then it just spills EVERYWHERE!

My Lil girl love this cup plus is super cheap

My daughter really liked these cups. I thought they were great, they don't leak. I thought they were a bit hard to wash.

Great transitional cup for toddler only issue is that cup leaks from top

My son is 5 months and we started him out with this cup. He loves it! It leaks a little bit but great for the price

Just purchased three of these for my nine month. They are easy for him to grip however the tops don't secure very well. Also whatever you decide to put in the cup leaks out extremely easy.

Leak They are a great price but they leak and the nipple pushes in a lot.

Good cups but they do leak

They aren't completely spill proof. Sometimes my son gets water on our bed with it, but he loves it. It seems to be easy for him to grab and drink out of. I would recommend them with caution though.