The mighty lid.
The Troy Lee Designs D2 Helmet sets the benchmark in affordable impact protection, ventilation, and bold style. Its aerospace composite shell offers high levels of impact protection without correspondingly high levels of weight, and the removable, washable comfort liner and cheek pads keep the helmet fresh after long days of lift-serviced downhills and shuttle runs. Sweat shouldn't be too much of a problem, though, because the D2 boasts 11 vents that pull air through the helmet and over your head to keep you cool and, hopefully, collected.
To keep the sun out of your eyes, Troy Lee hooked up an adjustable Orbit visor that's held in place with cross-top screws for easy and secure raising and lowering. The large eye port accommodates goggles of all shapes and sizes, and the soft helmet sock prevents your lid from getting scratched when you're in transit between the dirt jumping park and your backyard downhill course.