Tip: If you don t understand the size chart please read this sentence carefully (Size XL generally is suitable for 143lb each size is about 16lb difference). Of course it is recommended to use the size chart as much as possible. SUGGESTION:Men s button down shirts size runs small we recommend you to choose 1-2 size larger if you want a loose fit. Please refer to the size chart before purchase HIGH QUALITY FABRIC: This shirts made from great fabric lightweight breathable and soft touch do not shrink and fade Moisture-wicking. CLOTHING MATCH: These long-sleeve stylish slim fit shirts could be easy to match with short sleeve hawaiian shirts white tshirt workout tank tops crewneck sweatshirt athletic hoodies blazer jackets waterproof raincoat sports coat kimono cardigan knit sweater great to be matched with cargo shorts skinny jeans capris leggings sweatpants pants and so on. OCCASION: Perfect for spring autumn and summer fashion style formal work business wear everyday casual wear beach wear and etc.