polyester; light weight,slim pattern and stylish design. Stylish rib knit collar, wide rib knit hem, full length metal zip closure, comfy rib knit cuffs 2 side hand pockets,1 zippered pocket and 2 signature utility pockets on left sleeve,1 deep inner pocket(Deep enough for holding 6.5" cellphone) Gathered Knit cuffs and ribbed waistband can be tightened on the wrist to prevent wind from flowing into and makes you feel comfortable.