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NEMO Riff 15 Endless Promise Down Sleeping Bag (-9C)

NEMO Riff 15 Endless Promise Down Sleeping Bag (-9C)
$549.95 - $599.95
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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.

Riff includes a set of next-generation Thermo Gill™ vents on the chest to offer fine-tuned temperature control and a better outdoor sleeping experience. Each Gill features an interior and an exterior zipper with a draft-blocking intermediate layer, allowing several different configurations for dialing in the bag’s temperature without direct exposure to cold air. The Blanket Fold™ draft collar at the neckline features a redesigned size and shape to further optimize sleep temperature. Tucked in, the Blanket Fold defiantly blocks any chill while mimicking the comfort of your bed at home. Pushed out, it helps dump excess heat instantly. Finally, Riff includes strategically designed baffles insulated with water-resistant, RDS-certified down that are placed vertically along the torso for comfort and aligned horizontally below the waist to prevent down migration.

Riff™ is NEMO’s top-of-the-line, backcountry-oriented sleeping bag — and it’s also the latest addition to our suite of Endless Promise® products. Manufactured from a single type of material, this sleeping bag is 100% recyclable at the end of its life — just send it back to NEMO, and we’ll handle the rest.

  • 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.
Specs15 / Regular
Minimum Weight 2 lb 7 oz / 1.12 kg
Packed Weight 2 lb 10 oz / 1.19 kg
Packed Size 11.5 x 7.5 in dia / 29 x 19 cm dia
ISO Comfort 28F / -2C
ISO Limit 17F / -8C
Fill Type 800 FP
Fill Weight 1 lb 3 oz / 540 g
Fits Up To 6' / 183 cm
Shoulder Girth 60 in / 152 cm
Hip Girth 53 in / 135 cm
Knee Girth 57 in / 145 cm
Compressed Volume 6.2 L
Shell Fabric 100% Recycled Polyester Ripstop w/ C0 DWR
Lining Fabric 100% Recycled Polyester Ripstop w/ C0 DWR
Color Goodnight Gray
Zipper Location Left

Specs15 / Long
Minimum Weight 2 lb 10 oz / 1.2 kg
Packed Weight 2 lb 13 oz / 1.27 kg
Packed Size 12.0 x 7.5 in dia / 30 x 19 cm dia
ISO Comfort 28F / -2C
ISO Limit 17F / -8C
Fill Type 800 FP
Fill Weight 1 lb 5 oz / 593 g
Fits Up To 6'6" / 198 cm
Shoulder Girth 62 in / 157 cm
Hip Girth 54 in / 137 cm
Knee Girth 59 in / 150 cm
Compressed Volume 7.1 L
Shell Fabric 100% Recycled Polyester Ripstop w/ C0 DWR
Lining Fabric 100% Recycled Polyester Ripstop w/ C0 DWR
Color Goodnight Gray
Zipper Location Left

Tips for Taking Care of your Sleeping Bag

  • Store your sleeping bag appropriately. After extensive in-house testing, we've determined that you can confidently store a sleeping bag compressed — as long as it's completely dry. If you just returned from a trip, it's not a bad idea to store it loose for a couple days before stashing away in a smaller bag. When you get to camp, make sure to decompress your bag by leaving it unrolled and flat for a few hours (or as much time as you can) before using it — this will enable the down to loft back up and create a nice, puffy effect for a cozy sleep when you’re ready for bed!

  • Keep your sleeping bag clean. Oil and dirt can greatly affect a sleeping bag’s insulation over time. We know it’s hard to stay clean in the backcountry, especially after a summer day of hiking. When possible, give yourself a quick wash with a wet cloth and wear clean clothes to bed. Going to bed semi-clean feels so much better and in the long run, it’ll help your sleeping bag too.

  • Spot clean when possible, wash when needed. Your sleeping bag is composed of lightweight materials and delicate insulations — washing your sleeping bag after every trip is not recommended because the harshness of soaps and water can take a toll. When possible, only spot clean your sleeping bag. Use a non-detergent soap and make a paste with a small amount of water. Using a cloth or even a toothbrush, clean the affected area of your sleeping bag. Try not to get the insulation of the bag wet by pulling the fabric away from the insulation when cleaning.

  • Sometimes your bag is dirty, we get it. It means you’ve been on some great adventures! When you notice your sleeping bag looking flat, loss of loft, or generally pretty grimy — follow the directions below for washing. Washing your bag will definitely help revitalize the loft and warmth of your bag.

Washing your sleeping bag

If your sleeping bag is exposed to dirt, sand, etc., you can simply wipe it down with a wet cloth or spot clean with mild, non-detergent soap in cold water.

For excessive dirt and oil, we recommend the following steps:

  1. Wash your sleeping bag on a gentle cycle with a two-rinse option in cold water in an oversized, front-loading commercial washing machine with no agitator.

  2. Wash your sleeping bag with a technical fabric wash like Nikwax Tech Wash®.

  3. Tumble dry low heat in an oversized commercial dryer. Add some clean tennis balls to the dryer to help thoroughly dry the down/synthetic in your bag. Expect your sleeping bag to take several hours to fully dry.

  4. Once dry, shake your sleeping bag to restore the loft.

Other Notes: Do not use bleach on your sleeping bag. Do not dry a wet sleeping bag while it is bundled. Do not iron and do not dry clean. Do not use a high heat setting when drying your bag — this can melt the technical sleeping bag fabrics.

Cleaning Zippers

It is also important to keep the zippers of your sleeping bag clean. If your bag is exposed to dirt, sand, or salty air, wipe the zipper down with a wet cloth. In excessive cases, wash and treat zippers with a lubricant such as McNett Zip Care™ or a silicone zipper spray (popular in dive shops).

Sleeping Bag Storage

Taking care of your sleeping bag in the off-season is just as important as during the backpacking and camping season.

After each trip, follow these steps for keeping your sleeping bag in good condition for the next season:

  1. Clean the sleeping bag using the washing directions above for excessive dirt and oil build-up. If your bag is relatively clean, let the bag air dry on a clothesline for at least 24 hours in low humidity weather conditions before storage.

  2. Make sure your sleeping bag is completely dry before storing it. This is the most effective way to prevent mold and mildew from forming on your sleeping bag.

  3. For long term storage, keep your sleeping bag in an oversized breathable storage sack or on a clothes hanger. Do not store your sleeping bag in its compression sack. Tightly compressing your down/synthetic sleeping bag can damage the insulation and loft of the bag.

  4. Store the sleeping bag in a cool, dry, and dark area — away from direct exposure to sunlight.

Sleeping Bag Repairs

Small tears and rips can easily be patched with a product like Tenacious Tape™ by Gear Aid™. Just clean the area of the sleeping bag that needs patching, then peel and stick the patch on the tear. You’ll have a durable, nearly invisible repair that won’t leave behind a sticky residue as duct tape can.

NEMO offers professional repair services for more in-depth repairs. To request a repair quote or start the repair process, please start here. Have any questions? Reach out to our Customer Service Team.

Part Numbers

Option UPC Store SKU
Regular 811666035592 SLE553555114
Long 811666035585 SLE551672794