Pryme 8 helmets meet all CPSC requirements for bicycle helmets * Bonus decal sheet for your own personal customization and 2 sets of sizing pads to mix and match for the perfect fit * 13 large vents so cool heads always prevail * The new standard in protective gear; New shape with better fit and styling * LG/XL Fits 57-6cm; SM/MD Fits 55-57cm; XS/SM Fits 52-55cm