Troy Lee Designs D4 Composite Stealth MIPS Adult MTB Helmets chest roost protector Additional high density padding on

Additional high density padding on the fingers

Aramid fiber reinforced seat

Upper: Water-friendly faux nubuck upper

Side pocket with button closure

Sizes: 130/70-18 - 63H

Troy Lee Designs D4 Composite Stealth MIPS Adult MTB Helmets chest roost protector Additional high density padding onTroy Lee Designs D4 Composite Stealth 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