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Thermarest Hyperion™ 0ºC Regular Down Sleeping Bag

£355.00 £

During ultralight objectives, the 16-ounce Hyperion sleeping bag provides peak performance for uncompromising adventurers

  • The Thermarest Hyperion 0°C, 32°F sleeping bag is among the lightest in its class while still providing high-performance during backcountry adventures
    The bag uses thermally-efficient box baffled construction in key areas to ensure warmth and comfort in an ultralight package
    Designed with high-quality materials and Therm-a-Rest performance features, the Hyperion keeps your pack featherweight without sacrificing an ounce of performance
    Storage sack and compression stuff sack included
    Colour: Black Forest
    Season Use: 2
    Zip Side: Left
    Shell Fabric: 10D Nylon Ripstop with DWR finish
    Inner Fabric: 10D Nylon RipStop
    Insulation: 900 Fill Goose Nikwax Hydrophobic Down RDS
    Weight of Insulation: 8.5oz, 250g
    Weight: 1lb, 460g
    Packed Dimensions: 5.5 x 6.0in, 14 x 15cm
    Width: 72cm, 28.5in
    Length: 203cm, 80in
    User Height: up to 183cm, 6'0"
    Shoulder Girth: 57in, 145cm
    Hip Girth: 126cm, 49.5in
    Foot Box Girth: 109cm, 43in
    EN Temperature Ratings: 
    Comfort 5°C
    Limit 0°C
    Extreme -15°C
    Ultralight: One of the lightest pieces in its class, the Hyperion sets a new standard for high-performance outdoor equipment
    900-fill Nikwax Hydrophobic Down™: Stays drier and maintains loft 60 times longer than untreated down
    Unrivaled Packability: Lightweight materials and precise design allow for a smaller packed size than ever before
    Box Baffled Construction: Uses mesh walls to maximize loft and minimize cold spots in key areas
    Comfort Fit: Ergonomic shape and longer zipper provide a more human-friendly fit than other ultralight bags
    SynergyLink™ Connectors: Integrate the bag with a mattress for optimal efficiency and comfort; removable for versatility
    Zoned Insulation: Maximizes warmth and saves weight by intentionally placing fill where you need it most, 70% on the top and sides with 30% on the back
    Responsible Down Standard Certified: Certification that ensures that the waterfowl in the down supply chain are treated humanely

  • Free UK Delivery On All Orders
    Orders received BEFORE 1pm on days we are open are usually dispatched the same day with Royal Mail using a 2nd Class delivery service (normally 2-3 working days).

    Orders over £30 will be sent Tracked & Signed For.

    Please note that a different delivery method, e.g Courier, may be used depending on the size/weight of your order and if so we will try to inform you before dispatch.

    Next Day UK Delivery  £8.00
    Orders placed BEFORE 1pm on days we are open will be dispatched the same day, usually by Royal Mail or occasionally by Courier and will require a signature. Any Next Day orders received after this time will be dispatched the following working day. Please note any orders placed AFTER 1pm on Fridays will be dispatched on the following Monday (excluding Bank Holidays).

    Highlands of Scotland, UK Islands & Countries outside of the UK
    The above does not apply to these areas
    We do not deliver to countries not in the United Kingdom

    If you would like any more information on your delivery
    please contact us

    As a busy independent retailer, very occassionally we may not have the ordered item in stock. In this case we will inform you of the situation so you can decide how we proceed to your satisfaction. For example, the item may be on order from our supplier, Criterion will send a sleeping bag direct to the customer on our behalf (48 hour Parcel Force delivery).

  • Returns must be made within 14 days of receiving the goods. Please contact us to let us know your intention at or phone 01422 371146
    If you're returning an item because it's unwanted or you need to exchange it, we ask that you pay for the cost of return carriage. Exchanges for non-sale items will be sent free of charge. Standard delivery charges will apply to sale-item / special offer exchanges.
    All unwanted items must be new and unused, and with original labels attached, along with all receipts / proof of purchase. Please ensure the item(s) are packaged securely and suitably for transit

    Return to: 
    After Sales,
    BAC Outdoor Leisure Ltd
    Central Hall,  Coronation Street, Elland, West Yorkshire, HX5 0DF 
    When you're arranging to return an item, we strongly recommend that you use a recorded / insured delivery service as we regret that we cannot be held responsible for goods lost in transit. If return conditions are met we will issue a refund within a maximum of 3 working days of the goods being returned to us
    For Health & Safety reasons we are unable to accept returns of climbing hardware, helmets or baselayer / underwear.