Layered Gel, High Density Closed-Cell Foam And Neoprene Padding For Superior All-Day ComfortAirflow Side Panel Design Helps Ventilate Kneepad And Reduce Heat Build-UpOur Stabil-Cap Design Provides a Solid Kneeling Base And Also Allows For Easier Forward Movement, Effectively Increasing Your Range Of MotionElastic Web Straps With Hook-And-Loop Closures Provide For a Perfect FitOne Size Fits Most