Nemo Riff Men's Endless Promise Down Sleeping Bag 30℉

The Nemo Riff Men's Endless Promise Down Sleeping Bag 30℉ is a high-performance, three-season 800 FP down bag designed with a trim, athletic cut, catering specifically to side sleepers who prioritise packability. Featuring NEMO’s iconic Spoon® shape, it provides extra width at the elbows and knees for unrestricted movement, while the Ultralight Spoon silhouette narrows at the feet and shoulders to maintain a compact, space-saving design. This results in a sleeping bag that offers significantly more comfort than a traditional mummy bag while remaining highly portable.

Riff™ incorporates next-generation Thermo Gill™ vents on the chest, allowing precise temperature control without exposing the sleeper directly to cold air. Each vent includes interior and exterior zippers with an intermediate draft-blocking layer, offering multiple configuration options for adjusting warmth. The Blanket Fold™ draft collar at the neckline has been redesigned for optimal temperature regulation—when tucked in, it prevents cold air intrusion, mimicking the comfort of a home bed, while when pushed out, it quickly releases excess heat.

For enhanced insulation, Riff™ features strategically placed baffles filled with water-resistant, RDS-certified down—vertically aligned along the torso for comfort and horizontally below the waist to prevent down migration. As NEMO’s top-tier backcountry sleeping bag, it is also part of the Endless Promise® product line, designed for full recyclability. Made from a single type of material, it can be sent back to NEMO at the end of its life for responsible recycling.

Features of the Nemo Riff Men's Endless Promise Down Sleeping Bag 30℉

• Ultralight Spoon® shape adds room at elbows and knees yet is tailored for weight-shaving warmth.
  
• Updated Thermo Gill™ vents extend the comfort range and create fine-tuned control with their multistage zipper system.
  
• Updated Blanket Fold™ design offers a cozy, oversized draft collar that dramatically blocks cold air or releases excess warmth.
  
• NEMO takes full responsibility for all Endless Promise® products, from production to end of life, and designs them for 100% recyclability to keep out of the landfill.
  
• 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.
  
• Hood and footbox are reinforced with recyclable material treated with PFAS-free waterproofing to prevent tent condensation from soaking into the bag's fabric.
  
• Body-mapped design includes new 3D footbox for tailored comfort and warmth.
  
• Zip two Riffs (with opposing zipper sides) together to create a double sleeping bag.
  

Anti-snag zipper features protective edging to stop fabric from getting caught in the zipper pull.

Technical Specifications

• Minimum Weight:
  • Long: 910 g
  • Regular: 845 g
• Packed Weight: 
  • Long: 980 g
    
  • Regular: 915 g
• Packed Size:
  • Long: 27 x 19 cm dia
    
  • Regular: 26 x 19 cm dia
• ISO Comfort:
  • Long:  39F / 4C
    
  • Regular: 39F / 4C
• ISO Limit:
  • Long: 29F / -2C
    
  • Regular: 29F / -2C
• Fill Type:
  • Long:  800 FP
    
  • Regular: 800 FP
• Fill Weight:
  • Long: 325 g
    
  • Regular: 295 g
• Fits Up To:
  • Long: 198 cm
    
  • Regular: 183 cm
• Shoulder Girth:
  • Long: 157 cm
    
  • Regular: 152 cm
• Hip Girth:
  • Long: 137 cm
    
  • Regular: 135 cm
• Knee Girth:
  • Long: 157 cm
    
  • Regular: 145 cm
• Compressed Volume:
  • Long:  4.3 L
  • Regular: 4 L
    
• Shell Fabric: 100% Recycled Polyester Ripstop w/ C0 DWR
  
• Lining Fabric: 100% Recycled Polyester Ripstop w/ C0 DWR
  
• Zipper Location: Left