ONE MENS SHIRT. SIZE - IN THE FASHION INDUSTRY SIZES CHANGE FROM YEAR TO YEAR AND FROM BRAND TO BRAND, AND THEY CAN BE AFFECTED IF THE OWNER DOES NOT CAREFULLY FOLLOW THE CARE INSTRUCTIONS. FOR THIS REASON, PLEASE LAY A FAVORITE GARMENT ON A FLAT SURFACE AND COMPARE THE MEASUREMENTS BELOW TO YOUR GARMENT. REFUNDS WILL NOT BE PROVIDED BASED ON SIZE UNLESS I HAVE MADE A MISTAKE IN MY LISTING. WIDTH - (ARMPIT TO ARMPIT) APPROXIMATELY 20 INCHES (THE SMALLEST MEDIUM I HAVE EVER SEEN) LENGTH - (FROM THE TOP OF THE COLLAR TO THE BOTTOM OF THE SHIRT TAIL) APPROXIMATELY 27.5 INCHES SLEEVE LENGTH - (FROM THE SHOULDER SEEM TO THE END OF THE CUFF) APPROXIMATELY 9 INCHES SHIPPING IS CALCULATED BASED ON AN APPROXIMATE PACKAGED WEIGHT. IF YOU WISH TO PURCHASE MULTIPLE SHIRTS, PLEASE KEEP IN MIND THAT THERE WILL BE LITTLE OR NO SAVINGS ON SHIPPING FOR JUST 2 OR 3 SHIRTS. YOU WILL HAVE TO PURCHASE MORE BEFORE YOU CAN EXPECT TO SEE MUCH OF A DIFFERENCE ON WEIGHT BASED SHIPPING COSTS. I DO SHIP INTERNATIONALLY. ALL TAXES, TARIFFS AND DUTIES ARE THE RESPONSIBILITY OF THE BUYER.