The ToughBuilt® 2-in-1 knee pads are the versatile lightweight solution. Knee pads can be worn with or without the hard shells. Hard shells are made of rugged, hard-wearing, shatter-resistant plastic for use on rough terrain. The thick molded pads are made with soft, durable, non-marring foam keeping more delicate surfaces scratch-free. Comfortable single elastic strap hugs the calf and avoids bunching behind the knee for all day comfort.