The Montane Men's Phase Nano Waterproof Jacket has a slim fit that's been specially engineered for fast and light mountain-goers. Made using a 13 Denier GORE-TEX Active Shell fabric and a fully seam-taped construction, this is a reliable men's waterproof jacket that comes with GORE-TEX's guaranteed-to-keep-you-dry promise. A lightweight, breathable jacket without compromise, offering maximum protection with minimum weight. A waterproof layer for serious runners looking to push themselves further on the trail this season.