The main fabric for this jacket is polyester, 3-layer laminated construction with ePTFE membrane with high performance of breathability. High performance 3 layers construction will keep you bone-dry even in the worst rain, don't forget it's 3-in-1 jacket,it could be used in harsh winter, and also could be use in spring and autumn, inner jacket is fleece jacket, when you want to walk around the town in sunny day, the fleece jacket is a good option for you, when you want to head into mountain, the the shell is a nice choice, when you zip-in the fleece jacket, it's the very most for Ski Touring, Snowshoeing,forget to tell you,this interchange jacket with Hydrostatic head 15,000 mm. If you try to find a comfortable, versatile, and affordably priced component jackets, why don't try this one. I hope that our products will be able to reach your expectations or maybe beyond.