Never used quality down quilt made by Thermarest. It’s Double size lends itself for 3+ season backpacking / camping for a couple, or a generous extra warm layer on top of your 3 season sleeping bag, for really cold winter camping; due to it’s generous size it won’t compress your sleeping bag, reducing it’s warmth.
Down is ethically sourced and treated against moisture, so it doesn’t collapse when in contact with water.
Very light weight and compressible.
$350 firm. That is half of the retail price with taxes.