A friend had these and raved over how great they were so I decided to buy myself a pair. everything fit foot-wise but I could barely get these zippered up – and I have small calves! not sure why this happened or if anyone else experienced the same issue but it is something to be mindful of. ordering a bigger size wouldn't have helped because the foot part fit perfect. I was so disappointed that I had to return them because I love all my Keens.