Milwaukee Leather Men's Snap Front Denim Vest w/Shirt Collar (Blue,) Please follow size instructions to avoid ordering the wrong size, You need to order minimum 2" inches bigger of what your chest measures, Size Small is a 40" chest, Med. Is a 42" chest and so on each size goes up two inches, for example if you measure 47" or 48" around your chest you will need to order size 3X which is a 50", all sizes in the drop down above has the chest size right next to it 14.5oz 100% Cotton Denim Material Snap Front Closure Two Chest Pockets & Two Lower Hand Pockets Shirt Style Collar