Mountain Hardwear Mountain Speed Sleeping Bag

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The Mountain Hardwear Mountain Speed sleeping bag has lightweight fabrics and water-repellent down insulation—a great choice for alpinist and backpackers spending nights in damp, cool climes.

  • Features

    • Q.Shield™ advance water repellency technology protects individual down fibers from moisture so they retain loft and insulation properties; Q.Shield won't wear off
    • Insulated with lightweight and compressible Q.Shield 850-fill-power goose down, blended and lab-certified in the United States
    • Performance mummy cut features a snug overall fit that positions the down insulation close to the body, maximizing warmth and minimizing weight without restrictiveness
    • Nylon shell is lightweight and tear resistant; fabric is treated with a Durable Water Repellent finish to repel moisture
    • Tight 5-in. baffle spacing keeps down from shifting and prevents cold spots
    • Insulated draft tube extends to bottom of bag to eliminate cold spots
    • Multi-baffled, tailored hood lies close along the sides of neck and face for easy warmth
    • Ergonomic collar drapes comfortably over neck and shoulders, sealing out drafts; no need to cinch it unless it's close to bag's temperature limits
    • When it's cold enough to cinch down hood, face gasket makes hood closure more comfortable and effective
    • Comfort footbox is shaped to allow feet to rest naturally; shape preserves loft and allows insulation to drape close to feet for more warmth
    • Half-length zipper enhances weight savings; snag guards keep fabric from catching in zipper
    • Mountain Hardwear Mountain Speed sleeping bag comes with a stuff sack and a storage bag


    Many sleeping bags are rated for temperature by an independent testing protocol. REI and the broader industry now use the International Organization for Standardization (ISO) 23537 protocol, which improves on the older European Norm (EN) 13537 standard; you may still see older items in our assortment that were only EN tested. With either protocol, each bag gets a Comfort (or T-Comfort) rating and Lower Limit (or T-Limit) rating. The Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Ratings are based on a person wearing one long underwear layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38. Many brands use the Comfort rating for women's bags and the Lower Limit rating for men's and unisex bags. Everyone's body and sleep comfort differ, and conditions of use (posture, clothing, sleeping pad R-value, wind, humidity, etc.) affect total insulation, so EN and ISO ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth.
    View all Mountain Hardwear Backpacking Sleeping Bags
  • Technical Specs

    Best Use


    Tested Lower Limit

    32 degrees (F) - EN

    Tested Comfort

    40 degrees (F) - EN

    Temperature Rating (F)

    32 degrees (F)

    Temperature Rating (C)

    -1 degrees Celsius




    Ripstop nylon

    Insulation Type


    Water-Resistant Down



    850-fill goose down


    Ripstop nylon

    Sleeping Bag Shape


    Stuff Sack Size

    5 x 8 inches

    Stuff Sack Volume

    3 liter



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