The NEMO Disco 15F Down Sleeping Bag is a three-season sleeping bag designed with one goal in mind: to help side sleepers get a better night’s rest outdoors. Featuring NEMO’s signature Classic Spoon™ shape, hydrophobic down insulation, and clever temperature regulation features, the Disco 15 strikes a balance between comfort, warmth, and sustainability.
In this review, we’ll explore its materials, fit, warmth, packability, and real-world performance. Whether you’re camping in the Lake District or backpacking through the Alps, the Disco 15F offers a unique alternative to traditional mummy bags.
Design and Shape
The standout feature of the Disco 15 is its Spoon™ shape — a contoured design that flares at the elbows and knees to accommodate side sleepers and restless campers.
- Shoulder Girth: 157 cm (men’s regular)
- Hip Girth: 145 cm
- Knee Girth: 155 cm
- Length Options: Regular fits up to 183 cm; long fits up to 198 cm
Unlike restrictive mummy bags, the Disco allows you to bend your knees, shift positions, and sleep curled up without compressing insulation or feeling confined. It’s ideal for those who find traditional bags claustrophobic.
Materials and Sustainability
NEMO has made significant strides in sustainability with the Disco 15.
- Shell and Lining: 100% recycled polyester ripstop
- Insulation: 650 fill power hydrophobic down, certified by the Responsible Down Standard (RDS)
- Water Repellency: PFC/PFAS-free DWR coating
- Endless Promise™ Programme: Designed for full recyclability at end-of-life
The shell and lining feel soft and quiet, avoiding the crinkly texture common in synthetic bags. The waterproof footbox and hood panels add extra protection against tent condensation — a thoughtful touch for damp UK mornings.
Warmth and Temperature Ratings
The Disco 15 is rated for three-season use, with ISO-certified temperature ratings:
| Model | Comfort Rating | Limit Rating |
|---|---|---|
| Men’s Regular | -3°C | -9°C |
| Women’s Regular | -8°C | -16°C |
The women’s version is warmer due to increased fill weight — ideal for colder sleepers or shoulder-season trips. The Blanket Fold™ draft collar and Thermo Gills™ (zippered vents) allow fine-tuned temperature control, making the bag adaptable across spring, summer, and autumn.
Weight and Packability
While not ultralight, the Disco 15 offers reasonable weight and pack size for its warmth and comfort.
| Model | Weight | Packed Size |
|---|---|---|
| Men’s Regular | 1.3 kg | 29 x 21 cm |
| Women’s Regular | 1.6 kg | 32 x 23 cm |
The included compression stuff sack helps reduce bulk for backpacking, and a mesh storage sack is provided for long-term loft preservation. Compared to synthetic bags of similar warmth, the Disco is lighter and more compressible.
Features and Functionality
The Disco 15 is packed with thoughtful features that enhance usability and comfort:
- Thermo Gills™: Zippered vents on the torso allow heat to escape without letting cold air in
- Blanket Fold™: A flap of down that mimics a duvet, sealing warmth around the neck or venting excess heat
- Waterproof Footbox and Hood: Prevent moisture ingress from tent walls
- Pillow Pocket: Integrated sleeve to hold a pillow or stuffed clothing
- Stash Pocket: Small internal pocket for batteries or valuables
- Anti-Snag Zipper: YKK #5 zip with plow design for smooth operation
These features make the Disco 15 one of the most user-friendly sleeping bags in its class — especially for campers who value comfort and versatility.
Real-World Performance
Field tests confirm the Disco 15’s strengths:
- Comfort: Excellent for side sleepers and those who toss and turn
- Warmth: Reliable down to freezing; suitable for UK spring through autumn
- Moisture Resistance: Hydrophobic down and waterproof panels keep insulation dry
- Noise: Quiet fabrics reduce rustling for undisturbed sleep
The only trade-off is weight — at over 1.3 kg, it’s heavier than minimalist bags. But for campers prioritising sleep quality over ultralight specs, it’s a worthwhile compromise.
Pros and Cons Summary
Pros:
- Spoon shape offers unmatched comfort for side sleepers
- Thermo Gills and Blanket Fold enable precise temperature control
- Sustainable materials and full recyclability
- Waterproof footbox and hood panels
- Pillow pocket and stash pocket add convenience
Cons:
- Heavier and bulkier than ultralight alternatives
- Less thermally efficient than mummy bags
- Premium price point (~£320)
Ideal Use Cases
The Disco 15 is best suited for:
- Backpackers and campers who prioritise comfort
- Side sleepers or restless sleepers
- Eco-conscious adventurers seeking sustainable gear
- Three-season use in temperate climates
It’s less ideal for:
- Ultralight hikers or thru-hikers
- Expeditions in sub-zero temperatures
- Minimalist packers with strict weight limits
Pricing and Availability
| Retailer | Price |
|---|---|
| Ellis Brigham | £320 |
| Bergzeit UK | £323–£342 |
| eBay UK | £102–£212 (new and used) |
While not budget-friendly, the Disco 15 offers long-term value through comfort, durability, and sustainability. It’s backed by NEMO’s Lifetime Warranty and Endless Promise™ recycling programme.
Final Verdict
The NEMO Disco 15F Down Sleeping Bag is a thoughtfully designed, comfort-focused sleeping bag that redefines what side sleepers can expect from technical gear. With its spacious Spoon shape, clever temperature regulation, and sustainable build, it’s a top-tier choice for campers who value sleep quality and environmental responsibility.
While heavier than ultralight alternatives, the Disco 15 delivers where it matters most — warmth, comfort, and versatility. If you’re tired of mummy bags that feel like straightjackets, this could be your dream sleep system.
