Forensics Source Flex-Cuff Restraints White 10 Pack. The unique Strength Barb System contained within the Forensics Source Flex-Cuf's head makes them virtually pick-proof. The Forensics Source Flex-Cuf features a smooth inside surface combined with rounded edges that help to minimize the chance of abrasion or tissue damage. Features of Forensics Source Flex-Cuff Restraints: Designed to be a quick temporary alternative to handcuffs Unique Strength Barb System contained within the Flex-Cuf head makes them virtually pick-proof Smooth inside surface combined with rounded edges designed to minimize the chance of abrasion or tissue damage Nylon construction offers dimensional stability as well as flexibility Package Contents: Forensics Source Flex-Cuff Restraints Forensics Source 8210-1-10: Flex-Cuff Restraints White 10 Pack