Bests & Worsts Reviews from Amazon

These are practically worthless for several reasons: 1. They drip all over the place (because of pressure differences, liquid will often slowly drip out of the straw). 2. The covers are difficult to use and often snap off. 3. When you uncover the straw, liquid will often squirt out. 4. The bottom is rounded, so they fall over all the time. Buy a different straw cup. These are awful. (We returned them.)