DescriptionBuilt on a culture of independence, and struggling against conformity, it rebels against the status quo.Belfast Helmet Offers Real Protection, More Style And Increased Comfort Full features are now found in a 3/4 helmet. The Belfast design pays homage to the heritage of the classic 3/4 open face helmet melded with contemporary technology such as the SpeedView® drop-down sunvisor and nappa leather liner. The Belfast is a perfect balance of retro style, modern comfort and state-of-the-art technology. PERFORMANCE FEATURES: Hand-Laid Fiberglass Shell Luxurious Off-Set Stitching SpeedView® Drop-down Sunvisor Premium Nappa Leather Accents Hand-Stitched Comfort Liner Elegant Plush Interior 3 Shell Sizes DOT Approved 5 year warranty Sizing Head Circumference Size Hat Size Head Circumference Inches Metric 20 7/8 - 21 1/4" XS 6 5/8-3/4 53-54cm 21 5/8 - 22" SM 6 7/8-7 55-56cm 22 7/16 - 22 13/16" MD 7 1/8-1/4 57-58cm 23 1/8 - 23 5/8" LG 7 3/8-1/2 59-60cm 24 - 24 3/8" XL 7 5/8-3/4 61-62cm 24 13/16 - 25 3/16" XXL 7 7/8-8 63-64cm 25 9/16 - 26" XXXL 8 1/8-1/4 65-66cm