When worn for a few months it even takes on a very weathered and worn in look as it conforms to your body. Made of excellent quality 100% genuine leather; extremely soft & supple yet durable. These are one of a kind, made to order vests with wings already attached. The wings are made of strong japanese denim and various acrylic paints, etc. They are hand sewn firmly into placevest sizing information: size small: neck 7", armhole circumference 24 1/2", chest 38-41"size medium: neck 7", armhole circumference 25 1/2", chest 41-43"size large: neck 7", armhole circumference 26 1/2", chest 43-45other sizes available upon request e.