This easy-to-pack jacket was designed with lightweight sleeves and an insulating core to keep you warm without weighing you down. swift ultra light Four-way stretch Swift Ultra Light fabric is an airy, lightweight fabric woven to wick sweat and provide airflow—seriously, it’s like being in the buff four-way stretch lightweight sweat-wicking woven for airflow features Removable hood: This removable hood gives you options Interior drawcord: Lets you adjust the fit at the waist