Measure under the arms at the fullest point of the bust
Measure around your natural waist, narrowest point
Measure around the fullest part of your hips while standing
MEN'S fit guide - TOPS
Snug against body for range of motion with no extra fabric.
Skims the chest, waist, hip for active movement, but not tight.
Drapes loosely from the chest, waist and hip for total comfort and ease.