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