Everything else about these are great. It seemed easy at first, but the slide together bits work great until you get enough of them together to have some tension. Excellent mouse for this price No circulation issues, just feels like Im wearing 2 pairs of socks with these. The contact resistance is approximately 100 milliohms which is about five times what I expected. Theyre awesome! She is not diabetic but has many feet issues including bunions, corns, and hammer toe. Once we knew the size I checked out on Amazon and they charged me only for the ones I wanted to keep. If you?ve owned Sperry?s before these are just as expected. The cushion feels good but the arch support feels off and definitely not as pronounced as expected.