1.Precurved design conforms to the body. Allows total dom of movement and flexibility. Confidently enjoy these activities with remarkable elbow knee support while still maintaining peak performance and full range of arm knee motion. 2.Made of durable EVA padded material with large area tough plastic shell and high strong protection, Allows for a greater degree of comfort and protection for knees and shins. With superior wear resistance, plays a better cushioning in the collision. 3.The Knee Shin Protector with oneadjust quick release strap system allows for quick and easy application and removal, the size of elastic bands can be adjustable, prevents guard from slipping down leg. One size fits most, measure before would be much appreciated. 4.Multiple large vents breathable foam pads keeps skin dry and prevents abrasions and scratches, allows for a greater degree of comfort and protection for knees and shins.