The Aki II helmet is an ideal helmet for the road and helps reduce impact during falls with its new patent pending Rotexx technology. With its low profile on the head, it will improve your aerodynamics on the bike. The Aki II helmet has 28 ventilation channels to evacuate heat from the head and keep you cool during your rides! FEATURES: Spiderlock® Duo for easy adjustment with one hand only 28 Vents Inner evacuation channels Airdry® quick-drying paddings V-Lock divider In-Mold construction, MSB base Rotexx: patented Rotary Damping System Reflective Stripe at back