We?ve been repainting remodeling and doing some updates to the home to get ready to sell in the next couple of years. Ive also had surgery to repair a broken ankle and have several knee problems (infrapatellar bursitis, Osgood-Schlatter disease & Patellofemoral pain syndrome) so I go out of my way to wear only comfortable shoes. At this point only glue will hold the screw cap. Each and every area that there is stitching, it is very, very firmly attached. 5 -10 so I ordered the large which said 9-10. You do also need to pull out the bottom corners, which I gained knowledge of from a previous poster. Its also very secure so my phone doesnt fall off. Second, when the Covid 19 virus hit earlier in the year and we didnt understand everything about the spread we decided it was better to leave our shoes at the door in case we were tracking anything in. On a full charge it only lasts about 4-5 hours since I have it on full blast volume so I just have it plugged in at work most of the time, highly recommend ! Nor could cut grass with them in.