Ouch Reversible Collar with Leash Black. This collar is designed with a polyurethane PU leather and a neoprene side, this allows you to choose the material you will feel on your skin by simply turn the collar around. The Neoprene side is colored and the PU leather side is black for a rougher look! Also it features a Velcro lock what means it will fit almost anyone and a snap closure system to assure its interchangeable with other bondage toys! <br /><br />Specifications material side 1 Neoprene. Material side 2 polyurethane PU Leather. Diameter collar 5.91 inches, length chain 29.5 inches. Velcro locks. Metal snap closures.