What kind of plastics are helmets made out of?

Answer 1

This helmet is considered to be one of the best:

= HJC HX10 Auto Racing Carbon Helmet = Carbon Fiber materials are known for their strength, durability and light-weight, that is why HJC has chosen the most technologically advanced Carbon Fiber materials for the new HX-10 Carbon full-face auto racing helmet.

Super-Lightweight, Full Application, Carbon Fiber Shell Construction.

Meets or exceeds SNELL SA2005.

Plush, removable & washable Nomax Interior.

Double D-ring retention system.

Advanced ACS ventilation system.

HANS

Answer 2

This helmet is considered to be one of the best:

= HJC HX10 Auto Racing Carbon Helmet = Carbon Fiber materials are known for their strength, durability and light-weight, that is why HJC has chosen the most technologically advanced Carbon Fiber materials for the new HX-10 Carbon full-face auto racing helmet.

Super-Lightweight, Full Application, Carbon Fiber Shell Construction.

Meets or exceeds SNELL SA2005.

Plush, removable & washable Nomax Interior.

Double D-ring retention system.

Advanced ACS ventilation system.

HANS® device compatible.

* http://www.saferacer.com/hjc-hx10-auto-racing-carbon-helmet.html?productid=1194Some companies also use Kevlar.

Answer 3

It's strong enough for the purpose, cheap to manufacture, fairly light and easy to design in selling colors and shapes.

Answer 4

Polycarbonate plastic or fiberglass