Fit perfectly inside the ear charge in no time and stay charged for days! Whats more, I was traveling very large interstates with high speed limits (70mph and up) and never felt like the thing was going to fly off my roof and back at some poor driver behind me. The leg foam rolls are 4x8-inch thick high-density foam and covered in vinyl and feel very good quality. Lets be honest this is NOT CHEAP ! More importantly they are comfortable and the straps are kind of fabric and not plastic that makes it soft and easy to walk. I have to preface this by saying that I am by no means an audiophile user, nor a professional. It?s nearly identical to the original that came with my Sony headphones. I?ve had them for a couple months and I wear them everyday and they still look and feel brand new. These sandals are perfect and not bad looking. I have no complaints about this product so far and would recommend it for anyone looking for a good value fitness tracker.