Leatt 3DF Knee Guard - 2X-Large/Black Leatt 3DF, 3-dimensional impact foam offers a soft and flexible fit, yet instantly transforms into a hard, energy absorbing protector upon impact. This combination results in a comfortable fit that is not only flexible and lightweight, but also offers premium CE certified impact protection! Leatt 3DF foam for premium protection Super lightweight MoistureCool wicking fabric keeps you cooler Abrasion reinforced knee protectors for extra safety