Needs a replacement mic for my hyper x II headset. It was try these out or buy a new pair of Bose since the o briginal pads in mine were shot. Great Bluetooth device and a great price. My headphone cushions were in pretty bad shape and were peeling. Easy to use and the pump attachment fit his professional bike. Bien pero un poco grande para la talla que ponen. We managed to force it after all and kept The rack. I wear an 18W and my waist is about 43 inches. I specifically ordered these hoping they weren?t heavy. When I walk on them, the footbed obviously gets compressed which causes two problems: 1) the strap suddenly becomes too big and doesnt fit snug enough so my foot slides around, 2) the footbed doesnt seem to compress evenly because feet are curved so I end up sliding off the footbed which makes wearing these dangerous.