Men's black PREMIUM Buffalo Leather Motorcycle jacket Vented front back zipout liner Sizes 40-56 Measure around your chest under your arms at the widest part of your chest with arms by your side. Add 2 inches to the chest measurement and buy that size.If the chest measures 46 inches than buy 48. Front and back vents for ventilation. Adjustable waist. Zippered Wrist Closures. Heavy duty silver hardware.Orginal YKK Zippers. Permanent quilted Nylon Liner and zip out liner. This leather jacket was designed with two goals in mind style and comfort.