TourMaster Coaster 3 Men's Leather Motorcycle Jacket (Black, Medium) Top Grain, Grade-A Aniline Drum Dyed cowhide leather construction (1.2-1.3mm) Stitched with high strength bonded nylon thread Removable insulated liner features 100gm Polyfill insulation in the body and 50gm in the removable sleeves Removable, CE-approved shoulder and elbow armor Zippered chest, sleeve and rear exit vents provide flow-through ventilation; Chest vents also double as pockets