I have recently thrown out ALL of my regular T-shirt’s (except for my beloved band tees) and replaced them with these side slit tees. The XL is the perfect fit for me (I’m 5’11 and 270 pounds). They’re big enough that it’s still flattering while the sleeves are long enough to cover one of my biggest insecurities (my arms). Every couple of months I buy a few more so I can keep them all in rotation. I wear them almost on a daily basis because they’re are multifunctional! I wear them to workout, casual, to work, dress it up, etc. Highly HIGHLY recommend. You’ll love these too.