I pulled up some kettlebell work-out videos off of Youtube, and was worn out after about 15 minutes. And hoping to wear that for my USPSA matches soon. It worked but battery life was terrible. Runs very small and tight,, the front part is really small so your toes will come out, and ima size 6 but I think I would?ve needed a 7 1/2 and they are very uncomfortable if u dnt wear heels everyday, Nonetheless, they are very adorable. Early bday gift for him so he wouldnt bother mine. I?m back to buying the more expensive cables! These slippers are just what I wanted. A 10lb weight from the bar resulted in attached. It?s disappointing that Powertec would be so thrifty with the length given that this hose is likely very inexpensive to manufacture.