CCM Extreme Flex E4.5 Leg Pads feature a single break outer flex a pre-curved single break core on the inner flex to close the 5 hole a 90 degree boot flex with torsional flex for those power pushes a deep ultra soft boot channel a tight fit no calf strap on the leg channel a no strap 2” elastic knee strap system Recessed Foam with removable knee cradle DUALITECORE Technology in the core and a Nylon / PE Foam Knee Raiser to seal pad to the ice.