NAUTICA Underwear Sizing
 
NAUTICA Size Waist (inches) Waist (cm)
S 28 - 31 71 - 79
M 32 - 34 81 - 86
L 35 - 37 89 - 94
XL 38 - 40 97 - 102
XXL 41 - 44 104 - 112
 
See our complete fitting guide here