Thick but soft EVA padded elbow/knee support pad reduces the rate of sports sprains and injures. Elastic material allows flexible mobility with reducing skin irritation. The protective pad has breathable liner fabrics and ventilation polyester. Works best for body contact. Anti-slip silicone strip keeps the pads in place. Protect arms & knee from pulled muscle or sprain in outdoor activities such as baseball, basketball, cycling, baseball,skating and etc. Specification: Material : Polyester + Spandex Color: Black White Knee Pads: Size M: Upper Arm Circumference: 35-43cm / 13.8-17inch Under Arm Circumference: 23-31cm / 9-12.2inch Length: 43cm / 17inch Suggest weight 60kg Size L: Upper Arm Circumference: 37-45cm / 14.6-17.7inch Under Arm Circumference: 25-33cm / 9.8-13inch Length: 44cm / 17.3inch Suggest weight 70kg Size XL: Upper Arm Circumference: 38-46cm / 15-18.1inch Under Arm Circumference: 27-35cm / 10.6-13.8inch Length: 46cm / 18.1inch Suggest weight 70kg Elbow Pads: Size M: Upper Arm Circumference: 25-33cm / 9.8-13inch Under Arm Circumference: 13-21cm / 5.1-8.3inch Length: 40cm / 15.7inch Suggest weight 60kg Size L: Upper Arm Circumference: 27-35cm / 10.6-13.8inch Under Arm Circumference: 15-23cm / 5.9-9inch Length: 41cm / 16.1inch Suggest weight 70kg Size XL: Upper Arm Circumference: 29-37cm / 11.4-14.6inch Under Arm Circumference: 17-25cm / 6.7-9.8inch Length: 42cm / 16.5inch Suggest weight 70kg Package Includes: As you choose 1 Piece Knee Pad or 1 Piece Elbow Pad Note: Please allow slightly difference due to manua l measurement. Color may be slightly different since different monitor. Thanks!