Stuff the super-packable NanoWave 45 into your kayak stern or bike paniers - the lightweight bag is a master space-saver. DWR-treated polyester taffeta fabric sheds moisture. EN-tested to 45degF, the bag has synthetic SpiraFil high-loft insulation that stays warm even when wet.. . Spirafil High Loft Insulation for Maximum warmth and durability. Lightweight, Highly Compressible Bag Ideal When Space and Weight are at Premium. Full-length Zipper Extends Around End of Foot Box. EN Tested. Snagless Draft Tube. in.Feely in. Draw Cords. Two Way Zipper Sliders. Blanket Construction. Two Hang Loops. Zipper Garage. Compression Stuff Sack. Shell: 50d 100% Polyester 2.1 oz/yd. Bag temperature(degF): 50deg F. Insulation: Spirafil 60. Lining: 50d 100% Polyester 1.3 oz/yd. Weight: 2lbs., 4oz. (850g). Zipper position: LZ, RZ. Imported.