I have an unused, Regular length, 55.75" wide top quilt made by Enlightened Equipment in collaboration with Massdrop for sale.

I don't have a scale but it is purported to weigh 19.98 oz. It's made with black 15d taffeta (0.9 oz) and 800 fill power hydrophobic down.

20º Regular

• Length: 78 in (198 cm)
• Fits sleeper up to 72 in (183 cm) tall
• Loft: 2.5 in (6.4 cm)
• Fill weight: 12.1 oz (343 g)
• Total weight: 19.98 oz (567 g)

More specs here https://www.massdrop.com/buy/massdrop-down-quilt?utm_source=linkshare&referer=BKUT8T

$190 shipped 2-day Priority Mail continental US