The Simpson Speed Bandit newest model in the Simpson Bandit line of motorcycle helmets. FMVSS 218 DOT, ECE 2205 Certification Lightweight thermo injected Polycarbonate shell Three shell sizes for optimum outer profile Simpson "Speed Brow" with low-pressure venturi effect venting Venturi effect chin vents and central rear exhaust vent Ultra-wide, quick release shield for maximum field of view, 4 position with locking feature Pinlock ready Hypoallergenic comfort liner, fully removable/washable Speaker cut outs for communication system Available in 6 sizes XS-2XL Double d-ring retention system Helmets shown with optional Chrome Mirror, Dark Smoke and Iridium Shields, helmets are shipped with clear shield standard. Accessories: Helmet Bag, Han Post, etc. can be added to your order at an additional cost. Measure the circumference of the head at a point approximately one inch above the eyebrows in front, and at a point in the back of the head that results in the largest possible measurement. Take several measurements. The largest measurement is the one you want to use. Please don't guess your size or go by the size of a previously owned helmet. Helmet manufactures vary in size.