when the purchaser hasnt even tried it out. Even after tightening the bolts really tight, I notice the rack does move a bit when you are doing pullups. The leather didnt even touch my foot all over the top of my feet. Was a bit sceptical at first but so far so good, and have felt confident walking around the wet pool area after lesson. I had already been wearing the plain Jane sweat belts but could never get it tight enough. Customer support was no help either, they recommended using the old chat adapter which made the echo worse. They fit great and shes been able to put them on by herself for a while now. Ive almost completely converted to crocs. Sound quality -it?s bluetooth didn?t expect too much. Theyre not high-quality glass?the edges arent polished, the glass is a bit thin, and some of the glass has bubbled.