Lightweight and breathable, the women's Arc'teryx Proton Insulated Hoody meets the dynamic needs of mountain pursuits with a durable, air-permeable fabric and insulation that performs even when wet. Features Breathable, lightweight, wind-resistant and air-permeable Moisture-resistant Fortius™ Air 20 outer face fabric effectively balances air permeability and weather resistance with lightweight durability PrimaLoft® Gold insulation regulates temperature, performs if wet and is made from 100% recycled materials Breathable 20-denier plain-weave Toray liner allows airflow and is made with recycled content Working together, the breathable materials allow airflow that speeds vapor transfer and regulates temperature PFAS-free FC0 durable water repellent (DWR) treatment repels moisture Fitted with articulated patterning for mobility and comfort 60 g/m2 PrimaLoft-insulated, helmet-compatible StormHood™ extends coverage and provides additional warmth No Slip Zip™ prevents inadvertent opening Knit cuffs add comfort and style 1 chest pocket; 2 zippered hand pockets Dual lower hem adjusters