The DEWALT DG5204 Heavy Duty Kneepads are made with a ballistic poly material for long lasting strength and durability. They feature an easy to reposition upper tab, slip-buckle fastener system with adjustable straps, and large, adjustable neoprene straps. The gel technology layered over the thick, close-cell foam padding surrounds the knees for ultimate support and comfort. The heavy duty caps on the kneepads are designed for stability and wear on any surface.