The Grippy “X” Sleeves were designed for lifters who prefer the stiffest knee sleeves on the market. Featuring a stiff front panel for minimal stretch and maximum support, the Grippy X Sleeves also utilize a secured fit technology to prevent sliding and slippage. These sleeves are STIFF and aren’t for the fainthearted. Fitting tighter than the STrong Knee Sleeves, these are truly EXTREME!