I bought 5 because I wasn’t sure how they would fit or what to expect. XXL zip, XXXL Zip, 2 XXL pullover and one XXXL pullover. I normally wear XL shirt. The two XXL I bought fit me well. A bit snug as expected for the product. Pic is of XXL pullover. I play basketball in the XXXL only because there is a bit more freedom in movement. I generally work out in the XXL. I will buy zips going forward because after working out, the pullovers are a bit hard to get off. That may be because I’m already ...