--Fit System:LFS - Light Fit System --Ventilation:21 Wind Tunnel vents with internal channeling --Comfort:Super fit designed for the purpose of asian and western head shape. --CAIRBULL light weight design.Clean Tex Pads are treated antibacterially and prevent the rise of bacteria within the helmet. --Safety:Complies with CE EN 1078 CPSC 1203 AS/NZS 2063 safety standards for helmet for cycling and use with skateboards and roller skates for persons age 5 and older.