evo.com | Outdoor Research Balaclavas > ActiveTemp fabric is the quiet MVP of the Outdoor Research Octaclava, regulating your temperature as effort ramps up on a skin track or a mixed pitch. At just 3.5 oz, the hinged, hybrid-mapped construction slides under a helmet without bulk, and UPF 30 keeps spring sun off your face when you push the hood down for a break. 100% Polyester Weight 3.53 oz/ 100 g Thermo-Regulating ActiveTemp(TM) Treatment UPF 30 Hybrid-Mapped Construction | Outdoor Research Octaclava 2027 - Large/X-Large | Polyester