NEMO Equipment says:
NEMO Riff(TM) Men's down bag is a top-of-the-line backcountry three-season 800FP down bag with a more athletic cut, designed for side sleepers who prefer space-saving packability and shaving critical ounces for long hours on the trail. Thermo Gills(TM) help regulate temperature, making this bag a versatile superstar.
Current Retail: $349.95-$369.95
Historic Range: $204.99-$369.95