I’m a XL but this fit me good. I like it looser.Actually going to buy another for work!This shirt is very comfortable!! Good fit!!Unless you like a really over-sized shirt, I’d buy a size down. I used the size guide provided, but the shirt is way too big. I liked the feel of the fabric.Poor qualityWas excited to receive my shirt, only to be totally digusted and grossed out that someone's chewed gum was stuck inside the shirt! Just Nasty!!!!