Its the biggest factor in only being able to wear them for a short period of time, as it was constantly readjusting the fit from what was comfortable to uncomfortable. This thing is a cheap piece of hot garbage. Ill keep trying. I have ridden 76 miles the past two days and more prior to and the phone is held in nice and secure. Purchased for my three year old granddaughter and she was over the moon. Nobody can hear me walking in the house. Even bought one for myself. Fantastic, thank you. Good hitch boltsI got the dual matching locks since I have a height adjustable hitch, so need one pin at truck attach and one at height adjust. This pair I bought to wear to church and they serve the purpose but would not buy this style again.