A pinnacle-performance 3-season 800 FP down bag, Riff offers a trim, athletic cut designed for side sleepers who crave space-saving packability. NEMO's iconic Spoon bags are cut wider at the elbows and knees so campers can easily shift positions throughout the night, and the Ultralight Spoon silhouette used on Riff maintains that extra room while cutting in tighter at the feet and shoulders. The result is a sleeping bag vastly more comfortable than a mummy bag, but still impressively compact.