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NEMO Equipment Inc.
Riff Endless Promise Sleeping Bag: 15F Down - Men's

4.666666666666667 out of 5 stars
48 Reviews

Temporarily Out Of Stock

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Side-sleep warmth and space with Riff Endless Promise Sleeping Bag: 15F

What Our Gearhead® Experts Are Saying:


"I’m a chronic side sleeper and the Riff lets me tuck a knee without cold spots. It’s warm, packs small, and the Endless Promise build feels future-minded."


We turn cold nights into cozy ones with the Riff Endless Promise Sleeping Bag: 15F. The signature spoon-shape opens room at the knees and elbows so we can shift naturally, while targeted baffling and draft control help hold heat when temps dip.Built within the Endless Promise program, the materials and construction are chosen for long life and a clear path at end of life—adventure-ready today and tomorrow.


Details

  • Side-sleeper 15F down bag for shoulder-season treks
  • Spoon-shape adds room at knees and elbows
  • Efficient baffles and draft collar reduce heat loss
  • Smooth, snag-resistant zipper for easy exits
  • Soft liner feels comfortable on bare skin
  • Packs compactly for backpacking and alpine approaches
  • Internal pocket stashes headlamp and phone
  • Compression sack included for small carry
  • Item #NEMK04Z
Responsible Collection
Responsibly Sourced
Material
100% nylon
Insulation
800-fill RDS-certified hydrophobic down
Shape
mummy, spoon
Zipper
full-length
Max User Height
[regular] 6ft, [long] 6ft 6in
Shoulder Circumference
[regular] 62in, [long] 64in
Hip Circumference
[regular] 54in, [long] 55in
Foot Circumference
[regular] 59in, [long] 61in
Bag Length
regular, long
Draft Tube
Blanket Fold draft collar, full-length
Pockets
1 pillow
Venting
Thermo Gill
Fill Weight
[regular] 1lb 3oz, [long] 1lb 4oz
Degree
15F
European Norm/ISO Comfort Rating
28F
Storage Sack
included
Stuff Sack
included
Stuff Size
[regular] 12 x 7.5in (6.9L), [long] 12 x 7.5in (7.5L)
Claimed Weight
[regular] 2lb 6oz, [long] 2lb 9oz
Activity
hike & camp
Manufacturer Warranty
lifetime

What do you think about this product?

Overall Rating

4.5 based on 48 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 2 reviews
3 Stars - 2 reviews
4 Stars - 6 reviews
5 Stars - 38 reviews

Customer Images

Here's what customers have to say

The sleeping bag is praised for its comfort, warmth, and versatility, with features like the spoon-shaped design and temperature regulation allowing for excellent performance. While some users found it colder than expected and the pockets could be improved, the bag is generally considered an excellent and comfortable option that provides great value for outdoor activities.

AI-generated from the text of customer reviews.

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5 out of 5 stars

March 2, 2025

Perfect in the Alpine or by the Ocean

This is a versatile bag that with the gills you can make it warmer or colder! It packs great and it’s a safe bag to keep you warm in the right seasons!

JF Plouffe
nemoequipment.com

Originally reviewed on nemoequipment.com

3 out of 5 stars

November 22, 2024

Beautifully crafted and cozy, but cold…

I want to start off by saying I love this sleeping bag and it is crafted magically. I am 6ft with a broader build and went with the regular and it fits absolutely perfect, spacious enough for me to move around pretty comfortably without getting twisted up. However, it sleeps AT LEAST 15F colder than the comfort temp :( I took it down to 29-30F and absolutely froze, luckily I had an extra 25F quilt to throw over but even with that I was still pretty darn cold. I was wearing 240 Merino wool base layers and down booties, so wasn’t like I was naked. I find the ISO temperature ratings to be all over the place unfortunately. I would probably say this is a 27F LIMIT and 38F COMFORT bag, as opposed to the labeled 17F limit and 28F comfort.

Enzo
nemoequipment.com

Originally reviewed on nemoequipment.com

5 out of 5 stars

April 30, 2024

Great night sleep with great features

As a side sleeper this spoon-shaped bag gives plenty of room and allows for flipping side to side. I have this bag in both 30 and 15 degree rating. The 15 degree bag has performed well in temperatures below freezing. Paired with a Nemo Tensor wide sleeping pad it becomes a great sleep system. Keep up the great work Nemo!!!

Catfish Jansson
nemoequipment.com

Originally reviewed on nemoequipment.com

5 out of 5 stars

April 29, 2024

Perfect sleeping bag

The quality of Nemo sleeping bags is phenomenal. My husband and I buy only Nemo sleeping bags because we love them so much. I recommend this bag to all my friends and so many have been sold because of it. They all love them too!

nemoequipment.com

Originally reviewed on nemoequipment.com

5 out of 5 stars

April 29, 2024

Solid bag

This bag is very comfortable as a side sleeper and love the extra through that went into it like gills, no catch zips, draft collar, and...wait for it...a pillow sleeve in the hood! Plus, as an endless promise and Nemo's amazing warranty, it's worth spending extra on this!

MB24
nemoequipment.com

Originally reviewed on nemoequipment.com

5 out of 5 stars

April 29, 2024

All-Around Great

The bag is warm, but as a warm sleeper the footbox and vents really allow me to stay comfortable overnight. This also comes with a compression sack which is super helpful for packing. 10/10!

ConnorD
nemoequipment.com

Originally reviewed on nemoequipment.com

5 out of 5 stars

April 27, 2024

Great sleeping bag!

This bag is so comfy and warm. Game changer for a side sleeper like myself!

Bo05
nemoequipment.com

Originally reviewed on nemoequipment.com

5 out of 5 stars

April 26, 2024

Hands down best sleeping bag.

The RIFF 15 has been the best bag I’ve ever used. I work at an outdoor store and have tried some Kelty down bags and a Big Agnes 3 in 1. Although those bags have their perks, the RIFF fits all my needs and I have been extremely happy with it. I can proudly say I have converted to Nemoism.

Marlin
nemoequipment.com

Originally reviewed on nemoequipment.com

5 out of 5 stars

April 26, 2024

Leg room!

I’ve had the same Kelty mummy bag for 12 years and thought I’d never have to buy another sleeping bag again. I’m a side sleeper and the spoon shape was such an easy sell for me. I love my old bag but the Nemo RIFF is just so roomy I never want to sleep in a regular mummy bag ever again! The venting gills are a realistic feature that I’m happy made it to the final product. 10/10 love this bag!

Shane
nemoequipment.com

Originally reviewed on nemoequipment.com

5 out of 5 stars

April 26, 2024

Couldn’t be happier

Ordered this bag ahead of a Colorado elk hunt last fall and I was super impressed with the weight to warmth ratio and just how comfy this bag is. Since that trip I’ve used this bag for bike packing trips and several backpacking adventures and I continue to love this bag more and more. I’m a side sleeper so the spoon shape of the riff is a really a nice feature. If you who feel trapped inside of a regular mummy bag, give the riff a shot. I can’t recommend this bag enough and plan on using it for many many years to come.

Merle
nemoequipment.com

Originally reviewed on nemoequipment.com

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