The men's Anon Prime helmet offers the ultimate in safety features, light weight, and performance. It boasts the In-Shell 360° Boa® Fit System for easy, on-the-go fit adjustment with the turn of a dial. The Hybrid 50/50 shell construction combines durability on top with the performance of a featherweight bottom for a helmet that is incredibly light yet tough. The MIPS (Multidirectional Impact Protection System) offers the safest protection against angled impacts. Adjustable ventilation gives you one-handed control over 23 total vents, so you can fine tune your temperature depending on the weather and activity.