Sincerely Lace Corset Arm Cuffs from Sportsheets. Sexy, safe and lightweight introduction to restraints that can be worn close to the chest and behind the back. Allow your partner to test your boundaries and flexibility with corset closures and bendable but secure cuffs. Add a pair of ankle cuffs to allow for a more intense restraint session. Materials polyester, polyurethane PU, polyethylene PE, nickel free metal.