I just don't need an underquilt this warm ... What we have here is an unused HammockGear 0°F Incubator UQ + 4 oz overstuff. - Outer Color: Argon 67 Black - Inner Color: Black - Length: Standard - Overfill: 4 oz (25% overstuff) - Total Weight: 30.3 oz I'm thinking that this is probably among the warmest and lightest full-length sub-zero underquilts that money can buy. With the 25% overstuff, I'm thinking it should take you well below minus 10°F. This is totally new/unused. Stored uncompressed in smoke-free, pet-free home. Has the current updates. New, this goes for $315 + $10 shipping = $325. I'm offering it for 5% off the new price: $308.75 shipped to CONUS. My understanding is that HG is really swamped at the moment. I can ship this thing out to probably arrive before Christmas if you buy it soon.