SUSTAINABILITY: Filled with premium 800 FP hydrophobic, PFAS-free, RDS-certified down. Products certified to the Responsible Down Standard (RDS) contain down or feathers from farms certified to animal welfare requirements NEMO takes full responsibility for all Endless Promise(R) products, from production to end of life, and designs them for 100% recyclability to keep out of the landfill STORAGE: Includes compression sack and drawstring bag for storage DESIGN & DETAILS: Ultralight Spoon(TM) shape adds room at elbows and knees yet is tailored for weight-shaving warmth Updated Blanket Fold(TM) design offers a cozy, oversized draft collar that dramatically blocks cold air or releases excess warmth. Body-mapped design includes new 3D footbox for tailored comfort and warmth Anti-snag zipper features protective edging to stop fabric from getting caught in the zipper pull Updated Thermo Gill(TM) vents extend the comfort range and create fine-tuned control with their multistage zipper system Hood and footbox are reinforced with recyclable material treated with PFAS-free waterproofing to prevent tent condensation from soaking into the bag's fabric Zip two Riffs (with opposing zipper sides) together to create a double sleeping bag