What Our Gearhead(R) Experts Are Saying:"I wore the GORE-TEX Mammoth Down Vest through a brutal stretch of wet winter weather, and the combination of fully waterproof GORE-TEX and 700-fill recycled down kept my core warm and completely dry even when everything else was soaked. The oversized fit lets it layer over a thick midlayer without any restriction, and the handwarmer pockets are genuinely roomy."The vest that started as a legend and came back better. The Marmot GORE-TEX Mammoth Down Vest is the vest version of the iconic Mammoth GORE-TEX Parka, built around the same uncompromising combination of fully waterproof protection and serious core warmth that made the original a staple of cold-weather wardrobes everywhere. When the temperature drops and the city turns wet and windy, this is the layer that makes everything else feel manageable. GORE-TEX fabric with 100% seam-taped construction keeps wind and rain completely out while remaining breathable enough for active movement through cold urban days and mountain approaches alike. Inside, 700-fill recycled down delivers massive warmth relative to its weight, compressing easily for travel and storage without losing its loft over repeated use. The oversized fit creates room to layer generously over a heavy midlayer or fleece without binding at the shoulders, while a drawcord-adjustable waist dials in the silhouette when the situation calls for it. Oversized handwarmer pockets with flap closures keep hands sheltered and essentials close, and interior pockets handle the rest of what needs to stay organized and dry through a long day outside.