Troy Lee Designs D4 Composite Pinned MIPS Adult MTB Helmets Bottom Underwear 3-in-1 design with shell

3-in-1 design with shell

limiting hyper-torsion

Molded EVA footbed

EQYBS03846-KVJ6-33

Troy Lee Designs D4 Composite Pinned MIPS Adult MTB Helmets Bottom Underwear 3-in-1 design with shellTroy Lee Designs D4 Composite Pinned MIPS Adult MTB Helmets Always Evolving. 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 Composite routes cooling air through a front air intake system that flows through the polymer center and power grid