Nemo
Nemo Forte 2 °C Endless Promise Synthetic Sleeping Bag (Men's Regular)
Where it fits
- Also works for
- Bikepacking, Backpacking and wild camping
- Not for
- Winter mountain
Why these labels
- Bikepacking: Small enough for bike bags: packs to 4.7 litres
- Backpacking and wild camping: Light to carry: 0.9 kg
- Winter mountain: Comfort rating 6 °C: too cold for winter nights
From the maker's stated use and the published specs.
- Summer wild camp: 7/10 UK, roughly May to September, nights above about 8 °C, sheltered pitches.
- Three-season hills: 4/10 UK hills in spring and autumn. Wind, rain, and nights near freezing. Capped at 4: needs warmth 7+ (comfort 0 °C or colder).
- Winter camp: 4/10 UK winter or high ground. Below freezing, strong wind, possibly snow. Capped at 4: needs warmth 9+ (comfort -5 °C or colder).
- Weight: 7/10 How much it adds to your pack, compared with the whole market.
Comfort 6 °C, limit 1 °C (ISO 23537).
Summer and mild shoulder-season camps where you want a synthetic bag that tolerates damp
- Comfort
- 6 °C
- Limit
- 1 °C
- Fill
- synthetic
- Weight
- 920 g (Regular)
Packed size 4.7 L, 43 cm long and 21 cm across Compare with a 2-litre bottle
About one and a half 2-litre bottles long and about twice as wide. Drawn to scale.
Where to buy
Ellis Brigham £108 In stock. Free delivery.
View at shop: Ellis BrighamUltralight Outdoor Gear £159.99 In stock. Free delivery.
View at shop: Ultralight Outdoor GearNeedle Sports £162 In stock. Free delivery. Men's Regular, left zip; 1 in stock when checked.
View at shop: Needle SportsPrices checked 8 Nov 2026 on each shop's own page; shops can change them. We earn no commission on these links; shops are listed by price. More
Our ratings (out of 10)
1 to 10, compared with the whole market. Each says what it's based on. How we score
Warmth
From maker's figures 4/10How cold a night you can sleep comfortably through. 4: A bit below average.
Nemo's ISO comfort figure of 6 °C sits in the 5.1 to 10 °C band; the limit is 1 °C, so it is a summer and mild shoulder-season bag.
Room inside
Estimate: only 1 review about room inside (fewer than the 3 we need, so never above 8) 8/10How much room to move, bend your knees and sleep on your side. Roomier is comfier. 8: Clearly better than most.
Reviewers agree the Forte has a deliberately generous spoon cut with extra room at the elbows and knees, so side sleepers can tuck up and roll over easily. The roomy cut costs some warmth efficiency and bulk.
Weight
From maker's figures 7/10How much it adds to your pack. 7: Better than most.
Nemo's minimum weight of 920 g sits in the 700–999 g band.
Packed size
From maker's figures 8/10How much room it takes in your rucksack. 8: Clearly better than most.
Nemo states a compressed volume of 4.7 L, in the 4–5.9 L band.
In short
Good for
- Summer and mild shoulder-season camps where you want a synthetic bag that tolerates damp
- Side sleepers who find a mummy shape tight
Strengths
- Spoon shape with Thermo Gill vents and a big draft collar for temperature control
- Synthetic fill keeps working if the bag gets damp from a wet tent
- 920 g and 4.7 L packed is light and small for a synthetic bag
Weaknesses
- ISO comfort is 6 °C, so it is too cool for UK nights near freezing
- No independent reviewer has tested this current version, only earlier Fortes
- The packed size of 43 x 21 cm is long for a 4.7 L bag
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.