Based on Sierra Designs' bestselling Cloud Sleeping Bag, but now in a lower cost fully recycled synthetic package, the Night Cap Sleeping Bag features a zipper-less design with an integrated comforter for all the comforts of home in the backcountry. The Night Cap also incorporates the patented self-sealing foot vent and a pad sleeve, allowing increased ventilation for hot sleepers and movability for wiggle worms, side, and stomach sleepers.