Men's Collarless Denim Club Style Vest w/ Hidden Zipper (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 Zipper Front Opening w/ Concealed Snaps Two Chest Pockets & Two Lower Hand Pockets Collarless Design w/ Single Panel Back - Built in Dual Side Concealed Weapon & Ammo Pocket