Measuring Your Chest: Raise your arms slightly and measure around your body, keeping your chest relaxed. Be sure to measure across your shoulder blades and the fullest part of your chest. Measure over your typical riding clothes (including sweatshirts and thermal layers) to get your size. ALL HILLSIDE USA’S VESTS RUN TRUE TO SIZE. Long: A long vest is 2 inches longer in the body. Most people under 6’1″ wear a regular size unless they have a particularly long torso and arms. Most people over 6’1″ wear a long size unless they have a short torso and long legs. Note: If you are in between sizes or if your stomach measurement is larger than your chest, go with the larger size. A leather vest for every lifestyle, every taste. This unique design delivers amazing comfort Custom-craft right here in the U.S.A. Standard features for the Lightweight collection: 1.0-1.2 mm (2 1/2-3 oz.) top grain Cowhide leather, two slanted button pockets , double sided Cordura interfacing. two inside Cordura concealed-carry pockets (approx. 9″ deep) close with a snap. Both have a small internal pocket (4″ x 4″) for a gun barrel, magazine or cell phone. Hillside USA Snaps Closure. Single Panel Back, Poly Twill extremely durable liner.