Sleeping in the innovative Riff 15 Sleeping Bag by NEMO Equipment Inc. gives the comfortable space we need to get a good night's rest. This bag's self-proclaimed Spoon shape design gives more room in the shoulders, elbows, and knees so we can sleep on our sides or go back and forth all night. A waterproof footbox and water-resistant hydrophobic down insulation protect from tent walls lined with rain or condensation. If we put on too many layers before bed, we can unzip the Thermo Gills to release heat without letting in cold air. The conveniently integrated pillow-pocket stuffs extra clothes to make a pillow-on-the-go, while the external draft collar retains heat with a tucked-in feeling.