Troy Lee Designs D3 Fiberlite Helmet - No Mips Race-Ready and Budget-Friendly Taking features and design cues from the higher-end D3 Carbon and D3 Composite helmets, the Troy Lee Designs D3 Fiberlite brings race-ready performance without breaking the bank. The D3 Fiberlite features a lightweight fiberglass shell for minimal weight at a reduced cost. This shell is wind tunnel tested to be aerodynamically optimized, reducing drag while maintaining exceptional ventilation. The D3 Fiberlite exceeds bicycle safety standards, while 3D quick-release cheek pads allow for quick helmet removal in case of an emergency. To keep you cool, the D3 Fiberlite features a whopping 20 high-flow intake and exhaust ports to vent a massive amount of air through the helmet-with mesh screens to keep debris out-providing enough airflow for the hottest of days at the bike park. Features20 high-flow vents for intake and exhaust of air to keep you cool in any condition Lightweight fiberglass shell for reduced weight at a more reasonable price Comfortable 3D quick-release cheek pads to make the D3 quickly removable in case of an emergency Wind tunnel tested aerodynamics for improved effiency, especially at high speeds Exceeds safety standards ASTM F1952-15, ASTM F2032-15 (not to be used with motorized vehicles)SPECIFICATIONSCore Material EPSAdjustable Visor Yes Safety Certifications ASTM F1952-15, ASTM F2032-15Intended Use Enduro, Downhill, BMXSize Chart Size Extra Small Small Medium Large Extra Large XX-Large Head Circumference (cm)52 - 5354 - 5556 - 5758 - 5960 - 6263 - 65Head Circumference (in)20 7/8" - 21 1/4"21 5/8" - 22"22 3/8" - 22 3/4"22 3/4" - 23 1/4"23 5/8" - 24"24 3/8" - 24 3/4" | Troy Lee Designs | D3 Fiberlite Helmet No Mips Men's | Size Medium In Volt Flo Yellow