Hourglass Knee Sleeves - Ivory Rose Feature: Double seams along the back to keep greater tension on the knee joint, 7mm thickness (maximum allowable in most powerlifting federations), 30 cm length (maximum allowable in most powerlifting federations,) Hourglass-shaped center taper fit, which applies greater tension at the knee joint, Made with high-quality neoprene and other materials, Available in three stiffnesses: Flexi, Stiff, Rigor Mortis, Comes in a convenient mesh bag, Sold as a pair, Rigor Mortis version features the stiffest and most dense neoprene, Approved for use in USAPL, USPA, IPL, and IPF