Men's Aloha Shirt Size Chart (Actual measurement of the shirts in inches): Size S: Across Shoulder=17 Chest=40.5 Length=27.5 Size M: Across Shoulder=18 Chest=43 Length=28.5 Size L: Across Shoulder=19 Chest=47 Length=30 Size XL: Across Shoulder=21 Chest=50 Length=31 Size 2XL: Across Shoulder=22.5 Chest=55 Length=32 Size 3XL: Across Shoulder=23.5 Chest=58.5 Length=32