I have lots of these cups and my 16month old loves them. She had a hard time switching from bottle to cup and the nuby cups are the only ones she would take. They do leak a bit if you turn them upside down and shake them. But I know through experience with my first daughter who is now 4, that no matter what they advertise there is not a sippy cup out there that does not leak a little. I like these because they are inexpensive and if my daughter throws one out of the stroller and looses it or the nipple doesn't work over time they are cheap to replace. I give these a 5star!!!!

I have used these cups with both of my children. I personally have never had issues with excessive or obnoxious amounts of leaking or nipples getting sucked in. In fact, these are the only sippy cups my daughter would drink from instead of use as a chew toy-and believe me, I bought several to try out, and from more expensive, affluent brands. Nuby is phenomenal at pleasing their customers, and would seriously suggest that those who have complaints about leaks (I think minor ones can be expected) and durability to consult their customer service, and to get an even quicker response, their Facebook page. They are on top of their game when it comes to trying to maintain a positive reputation.

I loved these when my daughter was a baby, she was exclusively breastfed till 10 months and wouldn't take any bottle or sippy cup except the nuby brand. I had no problems with them 3.5 years ago. I've bought them for my son who is 11 months right now and he is a very curious baby and loves to bang these on the floor and squeeze the nipple so of course there is some spilling. He loves to drink from them, just wish he didn't want to play with them more then he drinks from them.

Works great, durable, and very affordable.

A great transitional cup. Leaks like every other sippy does. I'm used to it.

I started using it when my son was 6mnths.He never liked bottles since he's exclusively BF.We bought juust to give it a try.He liked it and figured how to hold it and all quickly.I would only give him water in it.Once he was about 10 mnths he figured how to tip it upside down and press the tip to make it spill.So we now stopped using it.But it works well for the price.

I like these cups..the price is good also...they do leak but u get what u pay for!

I like this product . Easy for your child to hold. They are decently priced and have found them to be spill proof.

I had a very hard time getting my youngest to change from a bottle to a sippy this was the only sippy she would use.

These are great as long as you don't just throw them in the diaper bags. If you generally keep them right side up they are great. My favorite are the ones with the straws

My daughter loves these cups but if your child likes to chew on them they wont last long. On the other hand they are cheap in price.

I really like these for my daughter. It is the perfect size for her to hold and if it does leak, it's very little.

These cups are absolutely amazing! The only downside I have noticed is that the seal around the top seems to wear out after so much use, but for the price it is well worth it!

This sippy cup, is how I get my kids off of the bottle before they are 1. I would rather it leak a little, than my kids to be 4 years old walking around with a bottle!

I like the look and feel of these, the colors can be for boys or girls. They are every easy for my baby to hold. If left upside down, they will leak but i have not had any problem with the nipples tearing or anything. I did have to bleach them though because they got stained after just a couple of uses (my daughter only drank water form them but they seem to collect color from whatever is being washed in the dishwasher).