With the Troy Lee Designs D4 Composite Full Face MIPS MTB Helmet it wasn\'t easy to improve upon the class-leading design and function of the D3 helmet, but Troy Lee Designs made it happen.Built with an aerospace shell design and materials, TLD were able to get the D4 Composite helmet to 1050 grams without sacrificing any strength. MIPS C2 protection system is used to add an additional layer of safety in the event of a fall. For comfort, the D4 Comp routes cooling air through a front air intake system that flows through the polymer centre and power grid side mesh, keeping your head cooler during the ride.X-static® and XT2® anti-microbial/anti-odour padding keep the inside of the helmet a much nicer place to be.Troy Lee Designs D4 Composite Full Face MIPS MTB Helmet FeaturesMIPS C2 protection system20 high-flow intake and exhaust ports for maximum ventilationAdded eps and new head form shape for improved impact performanceFull incremental sizing for a greater range of fitmentStrategically placed interior chin bar shock pads for comfort and durabilityQuick-release and contoured 3D cheek pads for emergency helmet removalPurpose-built internal cavities for audio integrationStainless steel chinstrap D-rings are light and strongIncludes TLD drawstring helmet sockExceeds bicycle certifications: CPSC 1203, CE EN 1078:2002+A1:2012 ASTM F1952-15, ASTM F2032-15, ASTM F2040-11Not intended for use with motorized vehicles