The Kelty Cosmic 20 Sleeping Bag allows us to get out on early spring camping trips and sneak away to backpack late into the fall. The bag is packed with 550 - fill goose down and utilizes innovative trapezoidal baffles to trap heat and keep us warm and cozy all night. The internal stash pocket keeps our headlamp and phone close, and more importantly warm, so we don't lose too much battery on cold nights. The dual slider design easily ventilates so we can stay comfortable while we sleep, and the spacious footbox provides room for our toes to wiggle while we snooze.