This soft restraint strap is made up of a neoprene cuff for comfort, a nylon belt for strength, and double hook and loop closures to ensure a strong, confident restraint. Securely restraining the elbows of some larger patients in the SureGuard Correctional Safety Restraint Chair(TM) may be a challenge due to the circumference of their arm. These straps are identical to the 18" soft straps provided on the chair, just longer in length. Customers wanting to add Elbow Soft Restraint Straps to their Mark 10 or earlier model restraint chairs will need to replace their existing arm rests and straps with new right and left arm rests and straps. The new arm rests have slots in the back so the elbow strap can be attached.