They're slip resistant. The insole has already started to slip. Not the most comfortable, but I'm not in pain anymore from breaking them in. I miss the Sketchers Work Shape Ups for men.  Edit: 9-11-2015. I'm going to buy the Sketchers now. Both insoles keep slipping and creating dead skin and/or calus's on both heals and my almost ingrown toenail I've been fighting for about 15 years with little effort, has become an ingrown toenail. I can't figure out how to upload photos from the app though.