Bell Scout Air HelmetLightweight with lateral impact protection, the Bell Scout Air helmet is the perfect compromise for riders on the fence between a half helmet and an open face. 5 shells and EPS liner Expanded polystyrene (EPS) is a rigid, energy absorbing foam. In the helmet industry, EPS is the most common means of energy management to protect the brain. Generic EPS is often referred to as Styrofoam (a trademarked name owned by the Dow Chemical Company). Premium helmet producers utilize multi-density EPS liners to balance comfort, safety and performance. s keeps a low outer profile for a sleek look while maintaining maximum protection within each shell size.Note: Customers have found that this helmet runs small and recommend sizing up one size.Features: Lightweight inmolded design Composite Tri Matrix shell construction 5 shells (XS-SM, MD, LG, XL, 2XL) 5 EPS sizes (XS-SM, MD, LG, XL, 2XL) Includes two peak visors Five-year warranty DOT