Adventure riding is unlike any other form of motorcycling. One weekend you might be carving through mountain twisties, and the next you're standing on the pegs crossing rocky trails hundreds of miles from the nearest town. Your helmet has to perform everywhere—not just on the highway or in the dirt. The best adventure helmets combine the comfort of a touring helmet with the versatility of an off-road lid. They need excellent ventilation, stable aerodynamics, reliable protection, communication...