True fit, no need to change your size - if you are a medium, order a medium. 12 oz/yd² / 407 gsm, firm-hand, 100% ring-spun cotton duck shell Nylon lining quilted to arctic-weight polyester insulation Brass front zipper with inside storm flap Inside pocket Two large lower-front pockets Drop tail Triple stitched main seams RELAXED FIT Firm duck Inner Lining: 100% Nylon Diamond Quilt Insulation: 100% Polyester Poly Insulation Sleeveless Two lower front patch pockets with lining Left inside pocket with hook-and-loop closure Full-length front zipper with interior storm flap Drop tail and adjustable draw cord hem Triple stitched main seams Carhartt label sewn on lower front Fits slightly loose for a comfortable fit, slightly below the waist so giving room for a tool belt if required. Or just wear cool with a pair of Carhartt denims.  V01 Duck Leisure Quilted Mens Zip Arctic Vest Jacket Top