For those days where the weather is unpredictable, this is The Jacket you wear. It's windproof, dust proof, and water resistant. If you happen to get caught in a light drizzle the fabric dries rapidly. If the weather warms up, you can take it off and store it in the convenient carry pouch, which can be strapped onto or put into your pack. Please read the size chart carefully before selecting your size. Please allow 4-6 weeks for delivery.