Sports Knee Pads: The knee cap is equipped with a high-density PEF cellular gaskets. The high-abrasion resistance of the gasket and the gap can absorb most of the force during collision. Size and Package: The 2 pack sleeves come in 6 sizes and can be worn by men, women, boys, girls, kids. XS: Length: 36 cm, Upper Circle: 26 cm, Lower Circle: 22 cm S: Length: 40 cm, Upper Circle: 28 cm, Lower Circle: 22 cm M: Length: 42 cm, Upper Circle: 30 cm, Lower Circle: 24 cm L: Length: 46 cm, Upper Circle: 32 cm, Lower Circle: 26 cm XL: Length: 48 cm, Upper Circle: 34 cm, Lower Circle: 28 cm XXL: Length: 50 cm, Upper Circle: 36 cm, Lower Circle: 30 cm Compression Leg Sleeve: Extended Leg Sleeve length for a better fit as well as added protection against cuts and scratches, reduce chafing, abrasion & skin irritation,each independent PEF replace EVA is improved to shock absorption and protect knees. Moisture Wicking: The knee pads can keep you feeling cool and dry with advanced Moisture Management Tech.rapid perspiration, drying and good breathable as well with anti slip silicone gel band to avoid falling off. Wide Applications:: It's perfect for sports that require to use your knees a lot, including ball games such as Basketball, Football, Baseball, Volleyball, Lacrosse, Paintball, Soccer etc.