Street & Steel WFO Helmet The Street & Steel WFO Helmet is a modern take on a vintage retro half helmet. A lightweight ABS shell with 4 different shell sizes ensures a comfortable fit. A moisture wicking antimicrobial interior keeps you from creating a stink on long rides. Features Lightweight ABS shell Custom printed moisture wicking antimicrobial interior Premium stainless steel D-rings DOT approved 4 shell and 4 EPS sizes Xxs- XS S-M L-Xl 2XL - 5XL