Abstract: An under-cuff protective device is formed to be placed and retained between a restraining device, such as handcuffs or leg-cuffs, and the detainee. The device includes a flexible base member of a length to substantially encircle the limb, generally at the wrist or ankle. Two wall members are attached to the outside of the base member in longitudinally spaced relationship, separated so as to permit the restraining device to fit between the wall members and snugly about the base member. The wall members form a wall-like structure which retains the restraining device in place on the base member. A preferred means of forming each wall member is by longitudinally folding a portion of the base member over onto its outside surface and attaching it there. The base member is fastened about the detainee's limb using two flexible connecting straps. Hook and loop fastening means are preferred.