Troy Lee Designs D4 Composite MTB DH BMX Bicycle Helmet w/MIPS Exile -

Bicycle Helmet D4… Always Evolving
It wasn't easy to improve upon the class-leading design and function of our D3 helmet, but we made it happen. Built with an aerospace shell design and materials, we 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 center and power grid side mesh keeping your head cooler during the ride. X-static® and XT2® anti-microbial/anti-odor padding keep the inside of the helmet a much nicer place to be.
Specifications

20 high-flow intake and exhaust ports for maximum ventilation

Added eps and new headform shape for improved impact performance

Full incremental sizing for greater range of fitment

Strategically placed interior chinbar shock pads for comfort and durability

Quick-release and contoured 3D cheek pads for emergency helmet removal

Purpose-built internal cavities for audio integration

Stainless steel chinstrap D-rings are light and strong

Includes TLD drawstring helmet sock

Exceeds bicycle certifications: 1203, CE EN 1078:2002+A1:2012 ASTM F1952-15, ASTM F2032-15, ASTM F2040-11

Not intended for use with motorized vehicles

PATENTED BRAIN PROTECTION SYSTEM
MIPS stands for Multi-directional Impact Protection System, it is a revolutionary technology that lets the helmet slide relative to the head, adding more protection against rotational violence to the brain caused by angled impacts.

Hand laid pre-preg carbon / composite / MCT weave blend for superior shell construction and weight reduction

Top layer UD (unidirectional) carbon weave provides strength and style

High modulus Kevlar reinforced high impact zones for increased strength a rigidity

Nylon reinforcement polymer in key high-wear and impact zones

NOT FOR USE WITH MOTORIZED VEHICLES