Pau1Hami1ton T-03 Men's Casual Slim Fit Cotton O-neck Short-Sleeve T-Shirt (4XL, Black) 100% Cotton Imported Easy care O-neck Breathability SIZE NOTICE (Chinese size 2-3 size smaller than US or EU) Please read the Size Chart From the LEFT Picture and the Description Carefully, NOT the Ones by Amazon On the Side Of the Item That You Click, Approx. Meas. (In inches flat down) US XXS/Asia Tag M Chest 35.6" | US XS/Asia Tag L Chest 37.0" | US S/Asia Tag XL Chest 38.6" | US M/Asia Tag 2XL Chest 40.0" | US L/Asia Tag 3XL Chest 41.6 ", | US L/Asia Tag 3XL Chest 43.