The leanest and lightest of our Reactor series, the Reactor 35 weighs in at a scant 2 pounds-but it’s heavy on warmth thanks to our thermal reflective technology. Constructed with toasty Thermix insulation and an Omni-Heat lining that traps and recirculates your body heat while providing breathability, the Reactor 35 Mummy is built to keep you comfortable on warm evenings and during brutal multi-day treks when weight is of the essence. Plus, it packs into a tiny, sausage-like 7.5”x17” stuff sack so it’ll take up minimal space in your pack. A draft tube along the zipper prevents it from becoming a cold spot, while the face gasket cinches down to keep crucial head heat in. Featuring a sleek, super soft texture, the shell fabric is outfitted with Omni-Shield advanced repellency to keep out the wet-and features only one layer of quilting to cut down on weight. A trapezoid toe box provides plenty of room for foot comfort. The Reactors are engineered with your choice of a right or left-hand zipper so they can be zipped together to make a couple’s bag. FEATURES: Fabric: 100% nylon, Omni-Heat thermal reflective lining, Omni-Shield advanced repellency, Stash pocket, Offset quilt construction, LH/RH zip together, Trapezoid footbox, Sleeping pad retention loops, Storage sack included, 7.5” x 17” compression sack included, Thermix MX Insulation, Draft tube, 35oz average weight, Long fill weight: 19oz average weight, EN T-Comfort: 51 degrees F/10 degrees C, EN T-Limit: 43 degrees F/6 degrees C, EN T-Extreme: 21 degrees F/-6 degrees C, Long fits 6’6” person, Imported,