Patagonia Glaciers of Patagonia :: Behance Discovering Patagonia's mountains, lakes and glaciers Tribes Travel Patagonia Men's R1 Air Zip Neck Blue Sage. A bit of tech fleece from Ventura's finest. The retro inspired gear has its place, but the R1 Air Zip Neck is a lightweight, performance oriented style, designed to take on some serious alpinism should the fancy take you. Constructed in a fully recycled polyester jacquard fleece, which comprises hollow core yarns, with a distinct zig zag texture designed to be extremely breathable and wick moisture. Offset seams and the soft bound cuffs and hem promote comfort. 100% recycled polyester jacquard fleece w hollow core yarns bluesign; approved fabric Half zip front Offset shoulder seams Low profile zip chest pocket Quick dry binding at cuffs and back hem Weight: 289g Fair Trade Certified; sewn Made in Sri Lanka Regular fit, choose your usual size