For a $75 pair of bluetooth headphones, poor bluetooth is absolutely unacceptable. I have problems with the bar slipping as my gym doesn’t allow chalk and the knerling is almost non-existent. Plus is easy for my son to open and close it without my help. Ill end up putting some in the bathroom too, next to the shower. I just used it for one day and these are my views. The inside of my left foot, the top of my foot, and my pinky toe were all rubbed raw so bad that after a week they still aren’t healed. However, considering the price and fast shipping its a nice little upgrade with probably the most color options out there in the market. Plus they required batteries and came with volume control which I dont need as I will be either using them with my laptop or on a plane. I suppose you could say it is easier on the ears. You trace the top circle part and then use the provided template to mark the holes for drilling.