Calvin Klein Underwear Sizing
 
Calvin Klein Size Waist (inches) Waist (cm)
S 28-30 71-76
M 32-34 81-86
L 36-38 91-97
XL 40 102
 
Calvin Klein Big & Tall Size Waist (inches) Waist (cm)
44 44 112
46 46 117
48 48 122
50 50 127
52 52 132
54 54 137
56 56 142
58 58 147
60 60 152
Tall Tall Tall
36 36 91
38 38 97
40 40 102
42 42 107
44 44 112
46 46 117
 
See our complete fitting guide here