Great idea, but just falls short of being useful. It is an amazing change! PROS:-Responsive buttons-Adjustable Weights (thought I wouldnt care about this, but I do now)-Good wire-Very customizableCONS:-Software is a tad confusing-Some buttons are not placed in the most accessible places-Not great for large hands das ist viel geld da darf man richtig was erwarten . it has a faulty switch. Also a bit narrow, but my husband has a slim foot. Ive owned waist trimmers in the past, but this one stands out from the rest with the 3 velcro straps. Now that theyre mostly broken in the fit is fine, but turns out I like my sandals with a little extra room. The hassle has definitely not been worth saving five bucks. They are selling faster then they can make them)With the Quest you need single corded headphones as these got all tangled up and I punched them off my head playing “Creed”, also pulling the Quest off my eyes as well.