• The outer shell is made of high-quality PE material, which can effectively resist strong impact. The inner side is designed with a cotton pad to cushion the impact which can effectively protect your joints. • Designed with elastic straps for easy adjustment of tightness,Soft-vented bio-foam chassis keeps you cool and comfortable. • This protective gear is scientifically designed with ergonomic principles and is comfortable to wear! The joint can be bent without affecting normal activities. It is a good joint protection for many outdoor sports. • The ergonomic principle is scientifically designed and the body is comfortable! Joints can not affect normal activities when bending, and are a good joint protection for many outdoor sports. • Scope of application: motorcycle riding, electric bicycle riding, bicycle riding and other outdoor sports.