Good sleep is all about being comfortable. The Kelty Callisto 30 Sleeping Bag features plush Cloudloft insulation and an anti-snag zipper design to help keep the stress low and the relaxation high. The classic rectangular bag shape opens up wide for use like a blanket. If you need something that you can toss in the car and head to the festival or the campground with, the Callisto 30 is your no-brainer companion.