NWT PATAGONIA Silver Gray Nano Puff Vest Size XL Put your shivers to rest with the lightweight and ultra-packable Patagonia Nano Puff® Vest. It's windproof and water resistant, making it perfect for chilly ski tours, shady belays, and windy ridge hikes. Plus, it maintains 98% of its warmth when wet and stows away small when you're not wearing it. The perfect combination of function and ease -- the Patagonia Nano Puff® Vest has it all. Fabric is bluesign® Approved – Any fabric you see that’s bluesign approved offers the highest level of consumer safety by employing methods and materials in their manufacture that conserve resources and minimize impacts on people and the environment. Brick Quilting Side Panels – Horizontal quilt lines stabilize insulation and uses durable thread for abrasion resistance. Center Front Zipper – Wicking interior storm flap and zipper garage at chin for next-to-skin comfort. Two Zippered Handwarmer Pockets – Cleanly finished zipper garages. Zippered Internal Chest Pocket – Doubles as a stuffsack with a reinforced carabiner clip-in loop. Drawcord Adjustable Drop-Tail Hem Seals in Warmth