Enlightened Equipment Convert 40 850

The Convert 40 850 is the lightest and mildest-rated quilt in this Convert lineup, weighing 536g with just 306g of 850-fill-power duck down and a 4°C limit rating — roughly the 40°F the name references. That's warm-weather territory: summer backpacking, mild shoulder-season nights, or as a supplementary layer over a warmer bag rather than a standalone piece for anything approaching freezing. It keeps the Convert family's full-length zipper for switching between an open quilt and a closed bag, and the footbox includes a ventilation option, useful for regulating warmth on the mild nights this quilt is actually rated for rather than adding cold-weather capability. The Regular cut fits users up to roughly 183cm. Made in the USA with RDS-certified down and PFC-free DWR treatment, this is a good pick for ultralight hikers chasing the lowest possible base weight on warm-season trips, or as part of a layering system where a second insulating piece handles colder nights. It is not a versatile 3-season workhorse the way the Convert 20 or 30 models are.