Thermoformed PC shell: it is the outside of helmet, if an accident collision happened, shell is the first defensive line to protect our head for dispersing the impact strength.
EPS: the polystyrene form inside part of helmet, it is the second defensive line to protect our head. The main function is to absorb the impact force during accident in order to reduce the personal injury.
Buckle and Webbing: fastening of correct position. The webbing fixed at two sides of below ears, the buckle fastened under the throat. Attention: After buckled it must have 1cm or 2cm free space, can’t be too tight or too loose.
Front visor: it divides into fixed and removable two version. Normally Road helmets don’t have visor, while mountain helmet are with visor with the function of avoiding the uncertain things flew into rider’s eyes, as well as shading effects.
Vents: it helps dissipating heat and ventilation for our head, to make sure the rider’s hairs keep dry and comfortable. With more ventilation vents will get more nice and cool, but relatively the safety factor will be lower. In this way it is better to choose the helmets with appropriate vents.
Wheel: every cycling helmet has the wheel on the rear part to adjust the degree of tightness. The rider could adjust the size according to their own headform.
Inner padding: It could absorb sweat flushed by human beings during riding as well as shake.
Notice: Riders should replace the helmet after 5 years no matter it was nerve fall down or crash. Because of an old helmet could not protect you as safe as a new one. Since sun, rain, sweat and vibrations affect the protective qualities of the material.