Cotton/canvas outer, lightly insulated with flannel lining. Faux fur on the hood is removable. Lots of pockets! EUC. A great casual jacket, warmer than it might look. Great quality, very sturdy. The tag is faint but indicates Large. I’m typically a medium and loved how it fit on me, so don’t be afraid to give this jacket a try if you’re on that Med/Large line yourself!