I was planning on using it on a climbing adventure in 2020, but wasn’t able to go. Pertex Shield waterproof/breathable shell keeps 800-fill-power down dry and lofting high. Cross-baffle construction prevents down from shifting and eliminates cold spots. 11-baffle, wraparound footbox Increases warmth while providing room for feet to rest naturally; reinforced footbox lining. Ultra-warm, Nautilus 6-baffle hood keeps down in its place. Zipper is backed by a down-filled draft tube. “Feely” drawcords let you make adjustments in the dark. Includes a stuff sack and large storage bag. Pertex Shield 30-denier 2-layer ripstop nylon. Pertex Microlight 30-denier ripstop nylon. Fits Up To in. 9.5 x 19.