Western Mountaineering Puma Gore Windstopper Sleeping Bag Made with breathable, weather resistant Gore Windstopper? fabric shell Roomy reverse differential hood keeps your head warm without having to cinch the hood tight 6" spacing of V-Block side baffles that prevent down from migrating and cold spots from forming 64/39" of shoulder/foot girth gives you extra room to add layers when the temperature drops Full down collar for with an elastic drawcord to help seal your body heat in