CE 1 honeycomb protector is comfortable to wear, and there is almost no foreign body sensation when riding, but it is a little convex when bending. First of all, most riding clothes use built-in protective gear, which mainly protects the shoulders, elbows, back and chest (there are fewer riding clothes with breastplates, so you should pay attention when buying them, and it is always good to have more protective plates). The built-in protective device has two kinds of protective plates. One is the soft rebound built-in protective device that the manufacturer claims to have passed CE certification. Its principle is to harden after severe impact, similar to the action of non-Newtonian liquid. So as to distribute the force hitting a point to the whole area of the protective gear (in an ideal state).