On the fit: - the sleeve length should be to your hand when your hand is bent back 90 degrees. It can be slightly shorter for a casual jacket. - there shou

On the fit: - the sleeve length should be to your hand when your hand is bent back 90 degrees. It can be slightly shorter for a casual jacket. - there should not be any bunching or lifting on the area under the collar at the back when you stand upright normally. This one is very common. - it should not be too tight anywhere when buttoned. You should be able to clench your shoulders and arms with your arms out in front without it pulling under your armpits or pulling too much across the shoulders.