Now my headphone is reborn. I wanted a pulley kit that came with a rope attachment and a straight bar attachment. After some months one of my sandals thong completely ripped apart from the insole and it was rendered useless. Bought these as a gift for my wife to replace a like model that wore out. Im not sure how well the plastic shelves will last. It’s as comfortable as the sandals. They are the most comfortable trainers I have worn. A great durable case. I like this power bar a lot. Pretty simple to me and took just a minute.