The material is 100% cotton, and I think it will be useful from early spring to early autumn. I've stored it in the closet and hardly worn it, so I'm decluttering. It's in very clean condition. How about it for those who wear jackets for work, etc.? I plan to pack it compactly and drop it off at the post, so please be aware of any folding wrinkles. Thank you for looking. Shoulder width / Body width / Sleeve length / Length Shoulder width...39cm Body width...41cm Sleeve length...56cm Length...56cm Color...Khaki系 (Khaki-like) Stains, tears, odors, etc....None