Light weight, well ventilated and safe. By molding aramid bridges into the construction, POC could create a super lightweight helmet while maintaining structural stability and protection. With six adjustable top vents, two front vents, two rear vents and goggle vents the Fornix"s ventilation system is designed to keep your head cool and your goggles clear of fog. The turn-ring size adjustment system provides a comfortable, snug fit. TECHNICAL FEATURES Efficient, adjustable ventilation. Aramid bridge reinforcements for structural stability. Goggle vents evacuate steam from your goggles. Goggle clip. Size adjustment system for a comfortable and snug fit. Sizes: XS-S, M-L, XL-XXL. Certified EN 1077-B, ASTM 2040. Weight: 420g.