The UVEX PerfexxionII Helmet is a high-tech, high performance carbon shell helmet that is incredibly lightweight and stable. The Individual Adapting System IAS 3D accommodates all head shapes and adjusts to ensure the perfect custom fit. The built-in circulation channels provide optimum ventilation and the interior moisture pulling material ensures you stay dry, so you'll feel cool and comfortable throughout your ride. The removable all-season inner liner is hypoallergenic and washable. Features easily adjustable chin strap system and a comfort closure that can be adjusted with only one hand. This attractive low-profile helmet includes a visor and is designed to meet US and European Safety Standards. ASTM F1163-15/SEI certified. Suited to riders of all ages.