Neiko 53868A Gel Filled Knee Pads for Work and Construction | Ultra Comfort | Non-Marring Ultra comfortable gel filled foam core keeps your knees protected and wide size gives great coverage Non-marring poly tread caps allows you to move back and forth without damaging the surface underneath Constructed from heavy duty neoprene fabric that is stretchy and breathable Easy adjustable and velcro straps provides quick access to snap them on and off Great for a variety of outdoor and indoor jobs and surfaces (wood, brick, cement) that requires you to be kneeling for long period of times