Mountain Hardwear Shasta 0 Sleeping Bag - Men's

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Do you prize durability, light weight and efficient warmth? Get it with the men's Mountain Hardwear Shasta 0 sleeping bag, which features a generous mummy fit and Thermal.Q recycled insulation.

  • Features

    • Thermal.Q insulation (80% recycled) has outstanding compressibility, maintains excellent loft and continues to insulate even when damp
    • Performance Plus mummy cut provides efficient warmth and comfort throughout
    • 20-denier ripstop polyester shell offers lightweight performance and durability
    • Shaped draft collar and insulated hood with adjustable face gasket trap the warmth inside and keep cold air out
    • Lightweight #5 YKK 2-way zipper with antisnag slider allows for easy entry and exit and lets you ventilate with ease
    • Full-length insulated draft tube prevents heat loss and cold spots at the zipper
    • Narrow, contoured footbox follows natural foot position for maximum warmth and comfort
    • Internal stash pocket stores essentials close by and keeps cold-vulnerable items warm inside the bag
    • Includes a compression sack and mesh storage bag for convenient, compact packing
    • Zip together left-zip and right-zip Mountain Hardwear bags to make a double sleeping bag (additional bags not included)


    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 the Mountain Hardwear Shasta Product Line View all Mountain Hardwear Men's Sleeping Bags
  • Technical Specs

    Best Use


    Tested Lower Limit

    0 degrees (F) - ISO

    Tested Comfort

    13 degrees (F) - ISO

    Temperature Rating (F)

    0 degrees (F)

    Temperature Rating (C)

    -18 degrees (C)



    Zipper Location


    Insulation Type



    Thermal.Q: 80% recycled polyester/20% polyester


    20-denier ripstop polyester

    Sleeping Bag Shape


    Stuff Sack Size

    9 x 17 inches

    Stuff Sack Volume

    15.5 liters




    Contains recycled materials

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