It is made of midweight leather and poly-mesh lining. Also has SUPERIOR Venting System with 2 shoulders, 2 vertical intake 2 back exit vents. Other features include action back, snap-tab mandarin collar, pre-curved sleeves, zipped cuffs, power-stretch side panels, 2 hand-warmer pockets, 2 inside pockets, interior eyewear pocket, a water-resistant cellphone pocket, and MP3 player pocket, extensive 3MTM Leather Jackets NYC reflective material tape, piping, and graphics on front and back. 3MTM Leather Jackets NYC reflective material applique on front and back.