jeansian Men's Outdoor Sport Quick Dry Short Sleeves T-Shirts Tees Tops LSL013 100% Polyester Imported and Designed by Jeansian Machine Wash US S (Chest 36-38 Inch) US M (Chest 38-40 Inch) US L (Chest 40-42 Inch) US XL (Chest 42-44 Inch) Over Weight 180 LBS May NOT Fit This Shirt. Please Check Our Sizes Chart in Description Before Purchasing.(NOT Amazon size Chart)