Naked cowhide leather is the top grade of leather--only 5% of skins are graded as "Naked". The leather is soft and supple, with minimum flaws. This jacket has a zip-out liner for adapting to changing weather conditions. Features include an inner vest with neck guard as shown, air vents - one on the back, two in front - multiple pockets, snap down collar, single panel back for easy placement of patches or embroidery, gathered bottom waistband, and zippered cuffs for a great fit! Sized by loose chest measurement, 38 to 60. Measure around widest part of torso, wearing a shirt. Add 2" to exact measurement for correct size to order to give room for easy movement.