So far these are holding up just fine after using them about a dozen times. I needed to secure mine using the point where my cables enter into the tube, but that limited the size of water bottle I can use. The soles of the thong have a weird cut, making it an awkward fit. I ordered my typical shoe size and the same size Ive ordered in LE slippers over the years. I ordered another pair of slippers for my other granddaughter in Medium. While these fit the Index well, the face pad isnt great. Scholls shoes, and the previous pair lasted me two years without complaint. My search is over. I use these wireless headphones for listening to music. The sound quality is alright when holding the bud in the perfect spot yet that spot isnt obtainable in normal use.