Why it's on the list
A sheet and a costume is a night awake and furious, then bad decisions in the sun. The bag we opened is Kelty's Cosmic Synthetic, Cirroloft fill, not down. The maker rates the regular at 40°F and says it fits sleepers up to 6 feet. That is the forties bag, not a 60°F festival sheet. Sold by JSK Hub. Wear socks. A base layer is still part of a comfort rating.
How we use it
The link opens on green, regular, the 2022 size. A long and a 2025 regular are on the menu. Stuff it in a bin, on the cot, under shade. Loose in the trunk it becomes a dust filter. Synthetic fill is the point if a morning is damp. Feathers from a ripped bag are moop.
Heads up
A 40°F rating is the maker's number, not a promise you will be warm at 40. Ignore a summer bag rated 60°F. That is a picnic blanket.
