im talking about length. if the bottom of the jacket meets the body's waist? or a little under it?
its cuz my jacket is nice snug fit, but the length is little short (i think) when in riding position air gets in the back of my waist. should i get one size up or..thanks.

 

Take into account the sleeve size. Do the sleeves go to your wrists? Are they longer and go past your wrist? If they go past your wrist then you should prolly get a smaller size. As for the waist thing, I think thats normal,

 

Perhaps you could consider buying a cumerbund and be done with it. They usually come in some fancy materials too. Velvet, silk, fox, crocodile....