The straps have stretched to the point, my foot slipped to the side and almost fell. I am using Jabra Bluetooth earphones for more than 5 years. These slips are really comfortable, however I wish I would have bought them a half size smaller. I am not kidding . The cargo bag hit all the right notes in its listing. Even one of my standard mountain bikes prove to be cumbersome to mount due to the position of the rubber straps. I think this is the cutest touch although it may suck to take apart the next day. I mean, it didnt collapse but it didnt go anywhere either and that ruined all of the fun. Ive been wearing them daily for the past 3 months and havent had a single nub break off, and they feel comfortable. Two hundred hours on it so far no problems!