Troy Lee Designs D4 Composite Stealth MIPS Adult MTB Helmets Size:Medium 90% Polyester/10% Spandex construction is

90% Polyester/10% Spandex construction is both lightweight and durable

Fore foot and rear foot bumpers for added stability

Replacement Pinlock-ready face shield for HJC i70 helmets

The Kinetic Crest Helmet offers dependable protection and comfort with a lightweight polymer shell

meeting CE certification standards for impact

Troy Lee Designs D4 Composite Stealth MIPS Adult MTB Helmets Size:Medium 90% Polyester/10% Spandex construction isTroy 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