Castelli Men's Top Sizing:
Size Chest Waist
XS 34.5" 30"
S 36" 31"
M 37.5" 33"
L 39" 34.5"
XL 41"

36.5"

XCL 43"

38.5"


HOW TO MEASURE

Grab a tape measure, write down the measurements and compare with our size chart for the right size. For best results, take measurements over your underwear. If your measurements fall between sizes, we suggest that you size up for a better fit.

1. CHEST

Holding the tape horizontally measure under your armpits with your arms relaxed at sides, around the fullest part of your chest.

2. WAIST

Holding the tape horizontally measure around your natural waistline, keeping the tape a bit loose.