Details 100% cotton Runs slightly smaller in size Adult t-shirt with black ink print Featuring the "House Engineer" design Size Chart Body Length (inches) Chest Width (inches) S 26 1/2 17 M 28 18 1/2 L 28 21 XL 30 1/2 23 1/2 2XL 30 1/2 24 1/2 3XL 31 26