Measurement Unit: US (inch) | World (cm) | Both

Old Navy Boys Underwear Size Chart

LabelSizeWaist
XS5
221/2 inch
57 cm
S6
23 inch
58 cm
S7
231/2 inch
60 cm
M8
24 inch
61 cm
L10
25 inch
64 cm
L12
26 inch
66 cm
XL14
27 inch
69 cm
XL16
28 inch
71 cm
XXL18
29 inch
74 cm

 

Measuring Tips

Here are some tips to help you order the correct size. If you don't have a measuring tape, use a piece of string and hold it alongside a ruler.

Waist

Measure around the narrowest part of his natural waist. To ensure a comfortable fit, do not pull the measuring tape too tightly.

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