Jump to: Our Verdict / Features / Specifications
Mountain Equipment's Fireflash sleeping bag is from their Extreme Light range and uses 900 Fill Power down and some redesigned baffle techniques to produce some of the best performing bags available.
Mountain Equipment says:
The warmest of our lightest bags. With 900 fill power down and optimised fit this is the perfect choice for going fast and light in the mountains.
Our Verdict
Mountain Equipment's Fireflash Down Sleeping Bag is part of their Extreme Light range which are among the highest performing bags available. They use 900 Fill Power down and a new baffle construction technique to achieve some awesome warmth to weight ratio figures. 950grams for a -14C bag is among the best around.
Design wise Mountain Equipment's sleeping bags are superb, the hood and footboxes are particularly well designed with multiple baffle sections to give them shape and structure. The Extreme Light bags have a built in neck collar rather than an out and out shoulder baffle - this saves weight and is pretty good in use.
There's a DWR coating on the outer shell which is PFC free, this will give the bag some resilience to a damp environment. As an ultralight backpacker I think these bags are what dreams are made of (see what I did there?).
- Reviewed by Ultralight Outdoor Gear
Features
- Alpine Fit 2.0 with revised EXL® system improves comfort and loft whilst maximising thermal efficiency
- Slanted box-wall baffles throughout
- Ground level side seams
- 7 baffle low volume anatomically shaped hood
- 4 baffle anatomically shaped and offset foot-box
- Full length Gemini zip baffle with 140cm zip and integrated neck collar
- Supplied with waterproof roll-top stuff-sack and storage cube
Specifications
- Regular weighs: 950g (excluding stuff sack)
- Packed size: 28 x 23 x 22cm
Temperature Ratings
- Comfort: -7°C / 19°F
- Comfort Limit: -14°C / 7°F
- Extreme: -34°C / -29°F
- Good Nights Sleep Guaranteed*: -16°C / 3°F
*Mountain Equipment use their own 'Good Nights Sleep Guaranteed' rating which they believe is a more accurate number for some sleeping bags and is based not just on the EN test results but on lab testing, their own use, thermal imaging and cold chamber work, along with a lot of data analysis.
Material & Construction
- PLASMA 10D fabrics throughout are incredibly light and breathable with PFC free DWR
- 610g of 90-10 European Goose Down with a minimum fill power of 900
- Plasma 10D inner throughout with PFC free DWR
- 100% Polyamide outer/inner, Down fill
Help & advice:
- The Ultimate Guide to Lightweight Sleeping Bags
- The EN13537 Standard
- Mountain Equipment Sleeping Bag Guide
- Down Quality
- All About Down
- Hydrophobic Down
- Why is 'PFC Free' Important?
- Recycled Content in Outdoor Gear
