Set of 2 protective knee pads made of durable EVA foam and a blend of nylon and spandex. Lightweight, knitted materials keep skin cool during aerobic activities and do not restrict movement. Dense 7/8" (2.20cm) thick foam protects knees from all angles. Ultra-thin design: Easy slip-on design that can be worn under or over clothing if needed. The flexible spandex fit will hug your knee, and the non-slip coating will help the protectors stay in place. Ideal for sports, workwear or general use where extra knee protection is needed. Preventive protection: EVA foam knee pads are helpful in minimizing potential risk of collision and impact, the snug fit helps keep muscles warm with increased blood circulation and mild compression during movement. Two sizes available; find your ideal size by measuring the circumference of your thigh, 4" (10cm) above your kneecap: S/M13.5"-17.5" and L17.5"-20.5" S/M 34.2cm - 44.5cm and L44.5cm 52cm To wear with elbow pads and shorts padded BODYPROX for complete protection.