Description: Thick but soft fabric knee support pad reduces the rate of sports sprains and injures. Elastic material allows flexible mobility with reducing skin irritation. The anti-collision rebounds instantly, the independent irregular edge liner builds a multi-directional care package,relieves the pressure on the patella. Quickly wicks perspiration through the surface layer, keeping the body surface temperature at all times. Protect arms & knee from pulled muscle or sprain in outdoor activities such as baseball, basketball, cycling, baseball,skating and etc. Specification: Material : Size : Kid M: Upper Circumference: 31cm/12.2inch Under Circumference: 22cm/8.66inch Length: 41cm/16.1inch Suggest weight: 40-90/20-45kg L: Upper Circumference: 35cm/13.7inch Under Circumference: 25cm/9.84inch Length: 48cm/18.89inch Suggest weight: 90-140/45-70kg XL: Upper Circumference: 39cm/15.3inch Under Circumference: 29cm/11.4inch Length: 50cm/19.68inch Suggest weight: 140-180/70-90kg XXL: Upper Circumference: 50cm/19.68inch Under Circumference: 32cm/12.59inch Length: 52cm/20.47inch Suggest weight: 180-230/90-115kg Package Includes: 1 Piece Knee Pad(2 Pack) Note: Size for manual measurement, there may be a 0 to 1 cm error, belongs to the normal phenomenon. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!