If you stay out past a cold sunset due to weather or altitude the Patagonia Nano Puff Hoodie blazes a trail all its own. This jacket has triple performance purpose as an insulated jacket, thermal microlayer and belay parka for an alpine dash or two. The elastic hood sits under or above small volume helmets, thus keeping your ears warm in any situation. The ripstop recycled polyester shell is coated with a DelugeR DWR finish so your coat is wind and water repellent. This coat is perfect for high alpine climbing, long treks and camping due to its pack able nature.