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