Tom Of Finland Neoprene Wrist Cuffs with Locks Black. These Neoprene wrist cuffs are adjustable, comfortable, and come with a Tom of Finland brand lock and two keys. The double layered material is stamped with a metal Tom of Finland logo. Fully adjustable and ideal for long term wear. Matching collar and ankle cuffs available, sold separately. Measurements adjustable from 11 inches to 14 inches in length, 2.25 inches in width. Materials Neoprene, metal, plastic. Color Black. Note includes lock and two keys.