HELIUM SLEEPING BAGS

EFFICIENTLY SIZED, SUPREMELY COMFORTABLE

Efficiently sized, supremely comfortable and low in weight each Helium bag offers outstanding all-round performance for backpackers, cycle-tourers and trekkers. These bags don’t skimp on features and will keep you warm and comfortable whether on a summer road-trip or extended trek.

HELIUM

EFFICIENTLY SIZED, SUPREMELY COMFORTABLE

Efficiently sized, supremely comfortable and low in weight each Helium bag offers outstanding all-round performance for backpackers, cycle-tourers and trekkers. These bags don’t skimp on features and will keep you warm and comfortable whether on a summer road-trip or extended trek.

HELIUM 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.

DOWN 700+

Our premium Duck down sourced from either within Europe or from China. With a cluster content of at least 90% and tested in individual batches to ensure a minimum fill power of 700. Some of the finest duck down available in the world and all 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.

*in our women’s specific models only

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.

HELIUM™ 20

Weighing just 38g/m2, HELIUM™ 20 uses 20 denier yarns to create a fabric that is compressible, tough, and extremely comfortable. Its densely woven construction ensures the highest levels of downproofing, wind resistance and resistance to heat loss. The new HELIUM™ 20 offers greater handfeel over previous HELIUM™ fabrics as well as reduced seam slippage, resulting in even greater durability than the previous fabric.

Supersoft™ 30

Supersoft™ 30 is our legendary performer chosen for its breathability and durability. Weighing just 49g/m² provides exceptional durability with a soft hand and good breathability.

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 BAFFLE

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 that many other manufacturers would use in only their most premium bags.

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.

LODE LOCK™ COLLAR CLOSURE*

Our Lode Lock™ collar closure with its low profile auto-locating closure combines all the advantages of a magnetic fastener with those of a mechanical lock. Rendering the traditional press-stud collar closure practically obsolete, its one handed quick release closure uses two captivated internal magnets to draw the locking mechanism together and ensure that once connected it cannot be accidentally opened. The result is an insulated collar that is more efficient and easier to operate. The collar’s down density is optimised so it moves with the user and contours to the body, while captive and elasticated drawcords ensure easy adjustment.

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.

* Excluding the Helium Solo and Helium Quilt models

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.

DC5 HOOD

A 5 baffle hood that provides high levels of down control, low weight and excellent insulation. Its roominess imparts excellent versatility and, combined with the easy-run dual tether draw cords, superb comfort.

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 4

A four baffle foot piece featuring our unique Bulls Eye™ Technology and offset Sharks Toe™ foot that is engineered for our lightest technical sleeping bags. Its baffle construction restricts down migration whilst keeping weight and bulk to a minimum.

HELIUM 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.

DOWN 700+

Our premium Duck down sourced from either within Europe or from China. With a cluster content of at least 90% and tested in individual batches to ensure a minimum fill power of 700. Some of the finest duck down available in the world and all 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.

*in our women’s specific models only

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.

HELIUM™ 20

Weighing just 38g/m2, HELIUM™ 20 uses 20 denier yarns to create a fabric that is compressible, tough, and extremely comfortable. Its densely woven construction ensures the highest levels of downproofing, wind resistance and resistance to heat loss. The new HELIUM™ 20 offers greater handfeel over previous HELIUM™ fabrics as well as reduced seam slippage, resulting in even greater durability than the previous fabric.

Supersoft™ 30

Supersoft™ 30 is our legendary performer chosen for its breathability and durability. Weighing just 49g/m² provides exceptional durability with a soft hand and good breathability.

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 BAFFLE

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 that many other manufacturers would use in only their most premium bags.

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.

LODE LOCK™ COLLAR CLOSURE*

Our Lode Lock™ collar closure with its low profile auto-locating closure combines all the advantages of a magnetic fastener with those of a mechanical lock. Rendering the traditional press-stud collar closure practically obsolete, its one handed quick release closure uses two captivated internal magnets to draw the locking mechanism together and ensure that once connected it cannot be accidentally opened. The result is an insulated collar that is more efficient and easier to operate. The collar’s down density is optimised so it moves with the user and contours to the body, while captive and elasticated drawcords ensure easy adjustment.

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.

* Excluding the Helium Solo and Helium Quilt models

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.

DC5 HOOD

A 5 baffle hood that provides high levels of down control, low weight and excellent insulation. Its roominess imparts excellent versatility and, combined with the easy-run dual tether draw cords, superb comfort.

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 4

A four baffle foot piece featuring our unique Bulls Eye™ Technology and offset Sharks Toe™ foot that is engineered for our lightest technical sleeping bags. Its baffle construction restricts down migration whilst keeping weight and bulk to a minimum.

DISCOVER THE FULL RANGE

HELIUM 800

Perfect for backpacking and trekking in cold but dry conditions. Whether staying in unheated tea-houses in the Himalaya or winter rooms in the Alps this warm but lightweight bag is ideal.

HELIUM 800 WOMEN’S

With our patented EXL® technology and women’s specific fit to provide extra warmth and loft. Perfect for backpacking and trekking in cold but dry conditions. Whether staying in unheated tea-houses in the Himalaya or winter rooms in the Alps this warm but lightweight bag is ideal.

HELIUM 600

Low in weight and warm enough for early Spring and late Autumn use at higher altitudes or Northern latitudes.

HELIUM 600 XXL

The ‘gran turismo’ of the Helium range. Wider and longer and offering exceptional comfort and performance for long-distance backpacking and trekking.

HELIUM 600 WOMEN’S

With our patented EXL® technology and women’s specific fit to provide extra warmth and loft. Low in weight and warm enough for early Spring and late Autumn use at higher altitudes or Northern latitudes.

HELIUM 400

An incredibly light, versatile and packable sleeping bag well suited to backpacking and cycle touring that will still happily cope with cooler nights during the spring and summer months.

HELIUM 400 XXL

The ‘gran turismo’ of the Helium range. Wider and longer and offering exceptional comfort and performance for long-distance backpacking and trekking.

HELIUM 400 WOMEN’S

With our patented EXL® technology and women’s specific fit to provide extra warmth and loft. An incredibly light, versatile and packable sleeping bag well suited to backpacking and cycle touring that will still happily cope with cooler nights during the spring and summer months.

HELIUM 250

Weighing less than most bottles of water and packing down equally small, this is the perfect bag for the dedicated warm weather backpacker.

HELIUM 250 WOMEN’S

With our patented EXL® technology and women’s specific fit to provide extra warmth and loft. Weighing less than most bottles of water and packing down equally small, this is the perfect bag for the dedicated warm weather backpacker.

HELIUM SOLO

If you want the lightest bag we make to help free up space on your global travels then this is it. Perfect for short excursions when a comfortable guest house isn’t always guaranteed.

HELIUM QUILT

Light and totally unrestrictive, this lightweight quilt can also form a basic bag for summer tent and tarp camping.

DOWN SLEEPING BAGS

SYNTHETIC SLEEPING BAGS

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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