Prowler RED Back-less Jock Strap Black A jock strap is a staple part of any guy’s sex stash, and this new fetish themed Back-less jock strap from Prowler RED will get you some good attention in the bedroom or when you are out at a sex party. Made from 82% polyester and 18% spandex, this jock strap features the Prowler Paw logo at the front of the waistband. The thick back straps will show off your butt perfectly and make you feel hotter than ever before.