Once I bought a pair of these I stopped looking at other flip flops. The reason that I didnt give these shoes five stars is because the area around the ankle rubs up against my ankle and the top of my foot. Unfortunately, thats where the positives ended. When it came in, I made sure to plug it in right away to make sure that it was in tact and working well. When I wear them at the gym the outside sounds do not bother me, you can hear the music. Easy to clean, dry quick. If I would have worn these, I probably would have included some body tape or a little safety pin to secure. I would recommend this product and certainly buy more But that bottom is bad. You get your "sway" back.