EXTREME LIGHT SLEEPING BAGS

EXTREME LIGHT

FIREFLASH | FIRELITE | FIREFLY

EXTREME LIGHT

FIREFLASH | FIRELITE | FIREFLY

REACH YOUR DESTINATION FASTER.

 

If you want reliable warmth for minimum weight, look no further.

Their advanced design and cutting-edge fabric technology has opened up a new standard in superlight bag construction. Developed for alpinists, ultra-distance backpackers and mountain athletes these bags will help you reach your destination faster, more efficiently and more comfortably than ever before.

THE LIGHTEST, MOST EFFICIENT BAGS WE HAVE EVER DEVELOPED.

If you want reliable warmth for minimum weight, look no further.

Their advanced design and cutting-edge fabric technology has opened up a new standard in superlight bag construction. Developed for alpinists, ultra-distance backpackers and mountain athletes these bags will help you reach your destination faster, more efficiently and more comfortably than ever before.

FIREFLASH

FIRELITE

FIREFLY

EXTREME LIGHT RANGE FEATURES

FILL

Down is a unique and exceptional insulation. It is more compressible, longer-lasting, and offers better warmth for its weight than any other fibrous insulation, achieving this through a structure that traps maximum still air while weighing as little as possible. Geese, Ducks and Swans all possess down feathers underneath their flight feathers, but as all of Mountain Equipment’s down is a by-product of the meat industry, our down is only sourced from Geese and Ducks. The down is removed from the birds at slaughter and processed to make it clean, hygienic and fluffy.

800+ FILL POWER GOOSE DOWN

Our very best Eastern European goose down. Sourced from Western Russia, with an actual minimum down cluster content of 90% and individually tested to ensure a minimum fill power of 800 cubic inches & DOWN Codex approved.

DOWN CODEX® APPROVED

In 2009 Mountain Equipment became one of the first outdoor brands to introduce independent auditing of our down supply chain. Quietly introduced, without fanfare or press-releases, DOWN CODEX® set out to understand an industry and supply-chain that was largely ignored and certainly little understood.

TRACE YOUR DOWN

All products contain a code that can be entered into our DOWN CODEX® website to trace the down that they contain. Not only can you identify the source of your down but the audit relating to that source and the down batch test results can also be viewed.

TRACE NOW

FIT

The fit of a sleeping bag is crucial in optimising performance.
A well-fitting sleeping bag is not only highly comfortable it also reduces dead air space and maximises thermal efficiency.

ALPINE FIT

Slightly more tapered in the upper body and in the legs than our Mountain Fit this fit maximises thermal performance and minimises weight.

EXL®

Our time-tested EXL® system, a patented technology developed to provide extra warmth and extra loft, adds no weight but minimises dead airspace around the body, reduces drafts, and pulls fabric away from the down allowing it to loft maximally.

FABRIC

Fabric technology is advancing all the time and we continually seek out those fabrics that offer the lowest weight, maximum breathability, compressibility and comfort.

Plasma™ 10D

One of the lightest downproof fabrics on the planet. Perfect for alpinists and backpackers for whom weight is absolutely critical. Despite being just 26g/m2, the fabric has exceptional tear resistance, giving you peace of mind on longer or more remote trips. It also has incredible air permeability, allowing for extremely fast drying and exceptional comfort.

BAFFLES

Baffle structure is crucial to the performance of down sleeping bags. Without it, even the best quality down will not loft and insulate to its full potential. Baffles affect a sleeping bag’s durability, weight, and the migration of down inside them – they are the building blocks from which sleeping bags are made.

SLANTED BOX WALL BAFFLES

A slanted box wall baffle takes the classic box wall and offsets it to reduce thermal bridges and increase thermal efficiency. It also offers improved down migration control. An excellent lightweight construction technique.

ZIP BAFFLES AND COLLARS

Our neck baffles and entry-zip baffles are vital in reducing the ‘chimney effect’ of hot air flowing out of the sleeping bag’s openings, and are also useful in reducing the ‘bellows effect’ of the movement of a restless sleeper pumping warm air from the bag.

NECK BAFFLE

Specifically designed for Extreme Light models, a significantly lighter yet highly thermally efficient replacement for the conventional neck collar. Used in conjunction with our Gemini zip baffle.

GEMINI™ ZIP BAFFLE

Our Gemini™ baffle is found throughout almost our entire line of sleeping bags. It is a unique zip baffle system which replaces the bulky, down hungry twin draft tubes used traditionally on cold weather bags. The Gemini™ system is light, efficient, low bulk and supremely protective. It is grown on to the sidewalls of the sleeping bag: the integrated zip baffle utilises a continuous V-baffle system paired with a shaped and stiffened underside. With a greater contact area than a traditional tubular set-up, heat loss by convection is significantly reduced and radiative heat loss minimised. Tested through every step of its development, it eliminates heat loss almost entirely and at a fraction of the weight and bulk of more traditional methods.

HOOD

The head loses a lot of heat and is very sensitive to changes in temperature, making good hood design crucial to the performance of any sleeping bag. A good hood will also keep the neck warm and reduce the ‘chimney effect’ of hot air escaping the body of the sleeping bag.

DC7 LV HOOD

7 baffles provide exceptional down control for long-lasting performing and excellent insulation. Smaller than our previous headline hoods, the DC7 LV reduces weight, has less deformation when cinched down small, and offers single handed closure and easy-run dual tether draw cords for greater ease of use in extreme conditions.

FOOT PIECE

Cold feet can spell the end of a comfortable night’s sleep or even the end of an expedition and we have unrivalled experience in designing innovative sleeping bag foot pieces. By controlling the down in a sleeping bag, the foot is kept warmer, and ensuring the foot piece fits perfectly around the lower body is crucial.

TRAPEZIUM 6

A six baffle foot piece, our most advanced design, and featuring both our Bulls Eye™ Technology and offset Sharks Toe™ foot constructions. Its highly sophisticated baffle system maximises thermal efficiency for the coldest and most demanding environments, ensuring warm feet night after night.

EXTREME LIGHT RANGE FEATURES

FILL

Down is a unique and exceptional insulation. It is more compressible, longer-lasting, and offers better warmth for its weight than any other fibrous insulation, achieving this through a structure that traps maximum still air while weighing as little as possible. Geese, Ducks and Swans all possess down feathers underneath their flight feathers, but as all of Mountain Equipment’s down is a by-product of the meat industry, our down is only sourced from Geese and Ducks. The down is removed from the birds at slaughter and processed to make it clean, hygienic and fluffy.

800+ FILL POWER GOOSE DOWN

Our very best Eastern European goose down. Sourced from Western Russia, with an actual minimum down cluster content of 90% and individually tested to ensure a minimum fill power of 800 cubic inches & DOWN Codex approved.

DOWN CODEX® APPROVED

In 2009 Mountain Equipment became one of the first outdoor brands to introduce independent auditing of our down supply chain. Quietly introduced, without fanfare or press-releases, DOWN CODEX® set out to understand an industry and supply-chain that was largely ignored and certainly little understood.

TRACE YOUR DOWN

All products contain a code that can be entered into our DOWN CODEX® website to trace the down that they contain. Not only can you identify the source of your down but the audit relating to that source and the down batch test results can also be viewed.

TRACE NOW

FIT

The fit of a sleeping bag is crucial in optimising performance.
A well-fitting sleeping bag is not only highly comfortable it also reduces dead air space and maximises thermal efficiency.

ALPINE FIT

Slightly more tapered in the upper body and in the legs than our Mountain Fit this fit maximises thermal performance and minimises weight.

EXL®

Our time-tested EXL® system, a patented technology developed to provide extra warmth and extra loft, adds no weight but minimises dead airspace around the body, reduces drafts, and pulls fabric away from the down allowing it to loft maximally.

FABRIC

Fabric technology is advancing all the time and we continually seek out those fabrics that offer the lowest weight, maximum breathability, compressibility and comfort.

Plasma™ 10D

One of the lightest downproof fabrics on the planet. Perfect for alpinists and backpackers for whom weight is absolutely critical. Despite being just 26g/m2, the fabric has exceptional tear resistance, giving you peace of mind on longer or more remote trips. It also has incredible air permeability, allowing for extremely fast drying and exceptional comfort.

BAFFLES

Baffle structure is crucial to the performance of down sleeping bags. Without it, even the best quality down will not loft and insulate to its full potential. Baffles affect a sleeping bag’s durability, weight, and the migration of down inside them – they are the building blocks from which sleeping bags are made.

SLANTED BOX WALL BAFFLES

A slanted box wall baffle takes the classic box wall and offsets it to reduce thermal bridges and increase thermal efficiency. It also offers improved down migration control. An excellent lightweight construction technique.

ZIP BAFFLES AND COLLARS

Our neck baffles and entry-zip baffles are vital in reducing the ‘chimney effect’ of hot air flowing out of the sleeping bag’s openings, and are also useful in reducing the ‘bellows effect’ of the movement of a restless sleeper pumping warm air from the bag.

NECK BAFFLE

Specifically designed for Extreme Light models, a significantly lighter yet highly thermally efficient replacement for the conventional neck collar. Used in conjunction with our Gemini zip baffle.

GEMINI™ ZIP BAFFLE

Our Gemini™ baffle is found throughout almost our entire line of sleeping bags. It is a unique zip baffle system which replaces the bulky, down hungry twin draft tubes used traditionally on cold weather bags. The Gemini™ system is light, efficient, low bulk and supremely protective. It is grown on to the sidewalls of the sleeping bag: the integrated zip baffle utilises a continuous V-baffle system paired with a shaped and stiffened underside. With a greater contact area than a traditional tubular set-up, heat loss by convection is significantly reduced and radiative heat loss minimised. Tested through every step of its development, it eliminates heat loss almost entirely and at a fraction of the weight and bulk of more traditional methods.

HOOD

The head loses a lot of heat and is very sensitive to changes in temperature, making good hood design crucial to the performance of any sleeping bag. A good hood will also keep the neck warm and reduce the ‘chimney effect’ of hot air escaping the body of the sleeping bag.

DC7 LV HOOD

7 baffles provide exceptional down control for long-lasting performing and excellent insulation. Smaller than our previous headline hoods, the DC7 LV reduces weight, has less deformation when cinched down small, and offers single handed closure and easy-run dual tether draw cords for greater ease of use in extreme conditions.

FOOT PIECE

Cold feet can spell the end of a comfortable night’s sleep or even the end of an expedition and we have unrivalled experience in designing innovative sleeping bag foot pieces. By controlling the down in a sleeping bag, the foot is kept warmer, and ensuring the foot piece fits perfectly around the lower body is crucial.

TRAPEZIUM 6

A six baffle foot piece, our most advanced design, and featuring both our Bulls Eye™ Technology and offset Sharks Toe™ foot constructions. Its highly sophisticated baffle system maximises thermal efficiency for the coldest and most demanding environments, ensuring warm feet night after night.

DISCOVER THE FULL RANGE

FIREFLASH

The warmest of our lightest bags. Perfect for going fast and light in the mountains.

FIRELITE

For ultra-light backbacking and alpinism it is difficult to conceive a bag so reliably warm being any lighter. Perfect for high mountain use during the summer and at lower altitudes in Spring and Autumn.

FIREFLY

As efficient a bag as it is possible to make. Inspiring confidence even when water turns to ice, this ultralight bag will pack a punch in any high mountain environment during the late spring and summer.

DOWN SLEEPING BAGS

SYNTHETIC SLEEPING BAGS

VIEW THE RANGE

FIREFLASH

The warmest of our lightest bags. Perfect for going fast and light in the mountains.

   

FIRELITE

For ultra-light backbacking and alpinism it is difficult to conceive a bag so reliably warm being any lighter. Perfect for high mountain use during the summer and at lower altitudes in Spring and Autumn.

 

FIREFLY

As efficient a bag as it is possible to make. Inspiring confidence even when water turns to ice, this ultralight bag will pack a punch in any high mountain environment during the late spring and summer.

 

DOWN SLEEPING BAGS

SYNTHETIC SLEEPING BAGS

GOOD NIGHT'S SLEEP GUARANTEE

Every Mountain Equipment sleeping bag comes with a separate ‘A Good Night’s Sleep Guaranteed’ temperature rating.
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