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    • Olympus 300, Olympus 450, Olympus 650

      Olympus Sleeping Bags

      Photo by Hamish Frost.

    The perfect first down bag

    A perfect first down bag that's ideal for camping and backpacking trips through the warmest months whilst still giving enough insulation for the cooler nights of late Spring and early Autumn.

    Built Better

    For those taking their first forays into the mountains, the Olympus is an excellent down-filled sleeping bag for those on more modest budgets.

    It offers a well thought-out and compelling feature-set which includes CODEX® audited down and PFC-Free fabrics. Packing down smaller, weighing less and likely to last far longer than nearly any comparable synthetic bag this is an ideal bag for Spring, Summer and early Autumn. 

    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. All of Mountain Equipment’s down is a by-product of the meat industry, sourced from geese and ducks. The down is removed from the birds at slaughter and processed to make it clean, hygienic and fluffy.

    600 Fill Power Duck Down

    A high quality duck down. Sourced from China, with an actual minimum down cluster content of 80% and individually tested at the point of filling to ensure a minimum fill power of 600. DOWN CODEX® approved.

    DOWN CODEX®

    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.

    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.

    Features | 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 2.0

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

    • Photo by Hamish Frost

    Features | 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 ™ 30D Outer

      Helium fabrics are our range of high performance woven downproof fabrics. Lightweight and ultra-compressible, Helium fabrics are the perfect choice for any product where weight and bulk are a prime concern. Their densely woven structure and use of fine denier yarns ensures these fabrics are down-proof, tear-resistant and highly breathable.

       

      Downproof by construction, they do not use membranes and as such have unimpeded breathability. A nanoscale durable water repellence provides water resistance. Helium fabrics are constantly evolving as our fabric partners develop superior technologies. Weaving is a constantly changing field and in recent years the speed of developments has only increased. Before we commit to any new fabric, however, it undergoes extensive laboratory and field testing. Only the best survive.

    • Supersoft™ 30D lining fabric

      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.

      Downproof by construction, they do not use membranes and as such have unimpeded breathability. A nanoscale durable water repellence provides water resistance. Helium fabrics are constantly evolving as our fabric partners develop superior technologies. Weaving is a constantly changing field and in recent years the speed of developments has only increased. Before we commit to any new fabric, however, it undergoes extensive laboratory and field testing. Only the best survive.

    Good Night's Sleep Guarantee

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

    Olympus 650: -9°C/16°F (Men's) -7°C/19°F (Women's)
    Olympus 450: -5°C/23°F (Men's) -5°C/23°F (Women's)
    Olympus 300: 0°C/32°F (Men's) 2°C/36°F (Women's)

    Features | 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.

    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.

    • 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.

    • Photo by Hamish Frost

    Features | Hood and Foot Piece

    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.

    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.

    • 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.

    • 2 baffle anatomically shaped and offset foot-box

      A 2 baffle foot piece baffle construction restricts down migration whilst keeping weight and bulk to a minimum.

    • Photo by Hamish Frost

    Get some sleep, tomorrow is a big day

    Perfectly adapted, the Mountain Equipment range of synthetic and down filled sleeping bags are the choice of today’s leading alpinists and arctic explorers. Ensuring comfort, protection and reliable warmth in the most extreme of environments. 100% of our down is Down Codex® approved and comes from independently audited and traceable sources.

    Trace your down

    What is the DOWN CODEX code?

    Click here to get a demo code and trace