The North Face Dolomite Sleeping Bag: 40 Degree Synthetic is a casual sleeping bag made for those weekend trips to get out of the city for a couple of days. The wrap-around zipper opens the sleeping bag up so it can lie flat like a blanket if things get too warm inside the tent, and an internal stash pocket holds your phone so you don't lose it at the bottom of your sleeping bag during the night. Heatseeker Eco insulation traps heat so you stay warm throughout the night, and is also made up of 30% post consumer recycled material, contributing to a lower carbon footprint as it contributes to a better night's sleep.