The Men's Arc'teryx Proton Hoodie Jacket is an insulated hoodie that helps you push through cold-weather climbs. This lightweight hoodie is packed with 80g of Coreloft Compact insulation and features an air-permeable face fabric and liner, all to keep your body temperature regulated. Partially recycled and featuring a FC0 DWR without intentionally added PFAS, this sustainably conscious layer is ready to bolster your comfort levels in the mountains.