Shell created with 100% polyester ripstop fabric with cire’ finish, and DWR treatment that provides excellent water resistance. 800 Gray Goose water resistant down, 180gsm . Deep hand pockets and chest pocket for easy accessibility. Armpits constructed of breathable polyester/spandex for optimal ventilation. Prois believes Mother Nature got it right with down and the Callaid jacket is a must-have insulation piece!