Nothing fancy here - just a light, simple, slick-surfaced, silnyon stuff sack with a drawcord closure and dust flap on top and webbing handle on bottom. While simple in design, these handy sacks are often all that is needed to keep your insulated clothing dry and organized when they're summoned from your pack for in-camp warming duty. A testament to the versatility and universal acceptance of this fabric/design: we could have chosen similar designs from at least a half dozen exhibitors at the show. 1.1 oz for the 880 ci model. MSRP $10 - $18.