Nuosende Men's Summer Military Style Short Sleeve Shirt S-Bust: 39.3(in) Shoulder:17.1(in) M-Bust: 40.9(in) Shoulder:17.6(in) L-Bust: 42.5(in) Shoulder: 18.1(in) XL-Bust: 44.0(in) Shoulder:18.5(in) XXL-Bust: 45.6(in) Shoulder19.0(in) XXXL-Bust:47.2(in) Shoulder19.5(in)