EPS is good.

1. Good environmental protection. The buffer layer of the helmet pp is made of polypropylene, and eps is expandable polystyrene. eps is better than pp. The material can evaporate automatically and can better protect the environment.

2. Strong ability to withstand pressure. The helmet buffer layer made of EPS material has a much better ability to absorb impact than EPS material. In the event of a collision, it can absorb external forces and protect the wearer's head safety.