Merry Christmas Santa Ho Ho Ho Red Sleeve Unisex Baseball Tee T-Shirt Short Sleeve Unisex Baseball T-Shirt / Chest size is measured from armpit to armpit. Size S : Chest 18.5", Length 27.0", Sleeve Length 19.0" Size M : Chest 19.5", Length 28.0", Sleeve Length 22.0" Size L : Chest 21.0", Length 29.0", Sleeve Length 22.5" 100% cotton, soft fabric, thin fabric, street style