The RAB Mythic Ultra 180 Sleeping Bag has woven titanium coated strands directly into a fabric to not only add a level of breathability, but it also wonA;&';t wash out over time. Stuffed with 900-fill certified RDS (responsible down standard) down, the 32-degree Mythic 180 ($550) weighs just 400 grams. Available in Regular Length only (74 Inches) Super lightweight 7D Ripstop Nylon Outer Fabric Rab Fluorocarbon free Hydrophobic Down developed in conjunction with Nikwax Trapezoidal baffle chamber design Proportionally assigned differential cut Anti snag bonded zip guard Internal collar and hood drawcord Insulation - 900FP R.D.S. Certified European Goose Down: 400g / 14.1oz Temperature rating 0AdegC (32.0AdegF) saving baffle construction, preventing down shift/migration A 1/4 length YKK 3 coil main zip with noctilucent puller Ergonomically designed internal collar Super lightw