I'm five foot 7 and I weight 130 pounds. Skinny by any standards. The LARGE size is incredibly tight and I can't even wear these. I guess I need a XXXL. Are these children's shirts? Also, the see how the sleeves are in the picture? They're sewn down like that. You can't move your arms. You can't put your arms over your head due to the weird design of the sleeves. I highly recommend against these shirts.