Ouch Reversible Collar Wrist Ankle Cuffs Black. This collar with wrist and ankle cuffs 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 turning the collar or cuffs 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 everyone, a snap closure system to assure it is interchangeable with other bondage toys and also it allows you to combine other colored cuffs! Specifications material side 1 Neoprene. Material side 2 polyurethane PU Leather. Diameter wrist cuffs 3.35 inches. Diameter ankle cuffs 3.85 inches. Diameter collar 5.91 inches. Length chain 31.5 inches. Velcro locks. Metal snap closures.