Explicitly designed for, and with input from,Axell Hodges, Slayco96 knee guard features EVS RMF (Reactive Memory Foam) Technology for a soft and pliable pad that stiffens upon impact. The Slayco 96 knee guard promotes increased endurance with less fatigue, allows for maximum airflow, the ability to squeeze and feel the bike, ability to go lower into corners with more leg flexibility, and generally more mobility on the bike. A favorite among freestyle mx, motocross and dual sport riders alike.