Troy Lee Designs D4 Polyacrylite Helmet Mips Colour:Blue/White 40" is designed for riders

40" is designed for riders tackling mixed terrain and conditions

Battery:  Lithium Ion rechargeable (15 hours)

Features knurled end for a no-slip grip

Epic offroad bike tours require you to bring all the essential tools and gear to keep from being stranded in the middle of nowhere

We took decades of bike helmet design and race expertise and packed it all into the most affordable full face we've ever made

Troy Lee Designs D4 Polyacrylite Helmet Mips Colour:Blue/White 40" is designed for ridersThe 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 Rotational Impact Brain Protection System Advanced Polyacrylite