Without powering it up, it looks and feels fantastic. These things saved my life this winter! extremely efficient and easiest to drive. 5 inches in back. You wouldnt think they were Crocs would you. Now, it doesnt stick as tightly as it did in the beginning which is the reason for dropping it down from 4 to 3 stars. I bought this because of my sisters results and Ive referred my good friend to get it as well! Please buy! The rubber straps need to be completely re-designed. Everyone is dressing comfortable and social distancing from each other.