Low profile helmet fully certified for bike and skate use at all levelsDeep, comfortable fit with Protec`s most advanced, slimmest profile shell and modern, luxurious linerBacked by over 40 years of design innovation, Protec is the original skateboard protective gear brand - since 1973BMX/SkateABS Hard ShellSM/MD 20.85 to 22.45` (53 to 57 cm) Gloss White11AdjustableUPC/EAN/GTIN: 604352891363