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The Rab Mythic Ultra Down Sleeping Bag 10°F is designed for fast-moving cold-weather trips where every ounce and inch of pack space matters. High-loft 900FP down works with Rab’s L.O.F.T 3D™ helix-shaped baffle construction to keep insulation evenly distributed and reduce heat loss, while a heat-reflective TILT lining further improves warmth without meaningful added weight. A lightweight Pertex® Quantum ripstop shell, tapered mummy shape, insulated half-length zip, and anatomically shaped foot box help balance durability, packability, and warmth for alpine objectives, fastpacking, and other demanding mountain use.
| Sleeping Bag Shape | Wide Mummy - A roomier cut with more leg space and a relaxed sleeping position, slightly more bulk than a standard mummy shape |
| Weight | 2 lbs 0.5 oz |
| Insulation | 900FP European goose down with Grangers fluorocarbon-free hydrophobic finish (590g / 20.8oz) |
| Main Fabric | 10D Pertex Quantum ripstop with fluorocarbon-free DWR |
| Fabric Lining | 10D Recycled Atmos™ (28gsm) with Thermo Ionic Lining Technology (TILT) |
| ISO Temperature Rating | Comfort: 23°F Limit of comfort: 10°F Extreme: -27°F |
| Packed Size | 7.9" x 13.8" |
| Sleeping Bag Length | 85" |
| Max User Height | 73" |
| Internal Shoulder Girth | 63" |
| Internal Hip Girth | 53" |
| Internal Foot Girth | 40" |
| Manufacturer Warranty | Limited lifetime |
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