N.D.
Yes, I bought several and they all leaked. I like the First Years cups like these: http://www.kohls.com/upgrade/webstore/product_page.jsp?PR....
A couple of things with this. 1) You can get them cheaper at Target and 2) While it says that it can go in the dishwasher, I would try to minimize how much because it can break the seal.
Hope this helps.
N.