I posted a WTB thread about four months ago. Ben Smith from Goosefeet replied and sold me this quilt for either $100 or $120 (I can't remember which.) It was a prototype of sorts that he had lying around. He didn't remember whether it was 800, 850, or 900 FP down. Ben rated the quilt as approximately 35F or 40F. I think he said the quilt's fabric is M50, but I honestly don't remember. I have no issues with it's construction; but as shown below, it's missing one side of a buckle on a strap (I received it like this and never got around to fixing it.) There's a pin hole in the fabric at one point, which I patched with some tape (also shown below.) The footbox has velcro to open for venting. The length is 6 feet.
Since receiving it, I've taken it on one weekend trip and stored it uncompressed since. The temperature on that trip dropped as lower as 40F. FWIW, I slept comfortably.
I'm selling because I'm too paranoid about getting down wet (although I've never actually gotten down wet.) Most of my gear has synthetic insulation. I replaced this quilt with an MLD Spirit Quilt so I wouldn't need to worry about moisture. The down-vs-synthetic debate is all personal preference though.
The quilt weighs 500g (17.86oz) on my scale.
I'm happy to answer any questions. I may not know the answers though.
For those who haven't heard of Goosefeet, I highly recommend Ben's work.
He operates from here:
*edit: added length