Outrun the cold. This is Arcteryx's lightest, most packable synthetically insulated hoody, which provides breathable warmth and transitional weather protection for winter mountain runs. The Fortius Air 20 face fabric balances airflow with wind resistance, mapped 40gsm Coreloft insulation provides breathable core warmth, and a PFAS-free treatment repels water. Woven stretch mesh on the back elevates airflow and freedom of movement, a streamlined hood extends protection, and zippered pockets provide bounce-free storage.
