Playtex Insulator Spill Proof Cups Review

i have a two year old daughter who likes to figure out how to open her sippy cups and the playtex insulator spill proof cups are the most durable cups i have found that she has not been able to open. it is a good sized sippy cup especially when others are smaller, it is hard to find good durable bigger sized ones. they were also very inexpensive at four dollars for two cups at target. it was easy to wash them and the spill proof valve was convienent for washing because on the cap is a little holder for it so it won't get lost in the dishwasher. my daughter liked it most because she was used to soft sippy cups & this one was a nice transition to hard sippy cups. the big con for me was that sometimes the valve would fall out if she dropped it and sometimes it was very hard for me to unscrew & open. also when hand washing it is hard to get in the little corners of the lid to get them clean but other than that it was a really great sippy cup & the insulation part does definitely keep things at the right temperature