I love these no show socks so much that I'm about to order another pack! They have a non-slip grip so they don't slip off in your shoe, which has happened a couple times but I was wearing booties and I just think I needed thicker socks. They are thin and just perfect for tennis shoes, I have worn them several times, at work and walking around a ball park all day and had no problem at all! They wash & dry fine, no holes or rips but ball up a little in the dryer and I'm digging around in the a.m. searching for my baby socks. I am a true size 7 and they fit perfectly..you won't be disappointed!