Troy Lee Designs D4 Polyacrylite Helmet Shadow Black X-Small. The reigning king of full-face helmets the D4 range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking including Mips C2 brain protection an air intake system for ventilation and an unmatched anatomical fit.

Mips C2 system and advanced Polyacrylite shell for rotational impact protection

Front air intake with high-flow polymer center and power grid mesh for ventilation

Collarbone Suspension System and breakaway visor screws for added safety

Anti-microbial padding and quick-release 3D cheek pads for optimized anatomical fit

• TECH SPECS

Rotational Protection YesHelmet Certifications Complies with the U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and OlderMaximum Head Circumference 54Gender/Age AdultMinimum Head Circumference 53Color Shadow BlackSize X-SmallVisor Included YesMulti Impact YesHelmet Style Full FaceDefined Color Black