Measure Your Waist: Use a soft measuring tape to measure the narrowest part of your waist, typically located above your belly button and below your ribcage. Make sure the tape is snug but not too tight.

Waist Trainer Size Chart
Size
Waist(inch)
Waist(cm)
XXS
21.7-24.4
55-62
XS
24.4-26
62-66
S
26-28.3
66-72
M
28.3-30.7
72-78
L
30.7-33.1
78-84
XL
33.1-36.2
84-92
XXL
36.2-38.6
92-98
3XL
38.6-40.9
98-104
4XL
40.9-43.3
104-110
5XL
43.3-45.7
110-116
6XL
45.7-48
116-122

Note: If your waist measurement falls between two sizes, consider going up a size for a more comfortable fit.