The Convert 10 950 delivers the same -12°C limit rating as the 850-fill version at a noticeably lower weight: 796g total with 546g of 950-fill-power goose down, against 861g and 611g of 850-fill duck down respectively. That roughly 60g difference is a fair illustration of what a higher-grade fill buys at matched warmth.
It keeps the Convert line's core idea — a full-length zipper that lets the quilt close into a sleeping bag or stay open as a flat blanket — without the seasonal jump to full winter gear; Enlightened Equipment lists this one at the 3-to-4-season boundary rather than the winter tier some Convert 0 and Convert 10 850 variants sit in.
Built in the Regular cut for users up to about 183cm, made in the USA with RDS-certified goose down and PFC-free DWR treatment. It suits hikers who already own a 3-season quilt and want a lighter step up for shoulder-season trips, rather than a dedicated winter bag for genuine sub-zero camping.