Original Penguin Men's Fit Guide

Size Chest Waist Arm Length
X-Small (0-2) 35 - 36" 29 1\2 - 30 1/2" 32 1/2 - 30 1/2"
Small (4-6) 37- 38" 30 1/2 - 31 1/2" 32 1/2 - 32 3/8"
Medium (8-10) 39 - 40" 33 1/2" - 34 1/2" 32 7/8 - 33"
Large (12-14) 42 - 44" 36 3/4 - 39" 33 3/8 - 33 3/8"
X-Large (16-18) 46 - 48" 41 1/4 -43 1/2" 33 7/8 - 34 3/8"