This ultralight and H2Oproof day sack has all the features necessityed for a fast and light summit push; the Outdoor Research Drycomp Ridge Sack features radio frequency welded seams and reinforced fabric on the bottom and pocket area to provide maximum strength and H2Oproofness. A mesh pocket accommodates a hydration bladder and stretch cording and gear loops secure crampons and ice tools. Compression straps cinch your load down and breathable mesh shoulder straps combine to offer a nice fit for alpine climbing and peak bagging.