Chest : measure under your arms, around the fullest part of your chest
Waist : measure around your natural waistline, keeping the tape a bit loose
Hip : measure around the largest part of your hip
Inseam : using pants that fit well, measure the crotch seam to the ankle bone
Castelli Men (UNISEX) Chart
S
M
L
XL
XXL
Chest (inch)
36
37.5
39
41
43
Waist (inch)
31
33
34.5
36.5
38.5
Hip (inch)
37
38.5
40
42
44
Inseam (inch)
32.2
32.6
33
33.5
33.8
Castelli Women Chart
S
M
L
XL
XXL
Chest (inch))
31
33
35
37
39
Waist (inch)
24.5
26.5
28.5
30.5
32
Hip (inch)
34
36
38
40
42
Inseam (inch)
29.5
29.9
30.3
30.7
31.1
MEASURING : for best results, take measurements over your underwear. If your measurements fall between sizes, we suggest that you size up for better fit.