Original Penguin Underwear Sizing
 
Original Penguin Size Waist (inches) Waist (cm)
M 31 - 32 79 - 81
L 33 - 34 84 - 86
XL 35 - 36 89 - 91
XXL 37 - 38 94 - 96
 
Original Penguin Size Chest (inches) Chest (cm)
M 37 - 39 94 - 96
L 40 - 42 102 - 106
XL 43 - 45 109 - 114
XXL 46 - 48 117 - 122
 
See our complete fitting guide here