I drove about 500 miles one way with average 75 mph speed and it was very sturdy. The battery life is excellent at 5 or 6 hours. The skin fits very snugly and is made of a material that is comfortable and does not cause sweat or discomfort after hours of play. The remote attached to the cord allows you to change volumes, mute, and deafen with ease. Its clearly a utility item designed and sold to hold a towel or other things you want to hang on it. 5 , it took a while to figure out which size I have to buy as crocs doesnt have right sizing. Fit great and look awesome . The laces allow for tightening too, so thats nice. I did manage to hang on my pantry door, but it isnt as pretty as I hoped if the shelves werent so bent out of shape. Battery life was measured over 3 days: 11 hrs on day 1, followed by another 11 hrs on day 2, then on day 3 it was 16 hrs giving a total of 38 hours after a voice said please charge.