Heavy poly-vinyl coating on cotton scrim provide durable protection against wind and rain, while remaining flexible, even in our cooler winter weather. There are ventilations holes under the back yoke, and a storm flap front closure with snaps. In nice condition - no rips, tears, or other signs of wear. There IS a small hole on the centre-back of the jacket, as shown in the close-up photo. I can patch this for you, if you wish.