Free 2-Day Shipping on Orders Over $50*
Home Page

Detail Images

  • Marmot - Phase 30 Sleeping Bag: 30F Down - Deep Teal/Turf Green
  • Marmot - Front -

Current Color

Marmot Phase 30 Sleeping Bag: 30F Down

$398.95 - $418.95

Free 2-Day shipping on orders over $50. Learn More

Select a Size:

Select options
  • Select options
    • Reg/Left Zip
    • Long/Left Zip

    Select a Color:

    Select options
  • Select options
    • Deep Teal/Turf Green


    4 Reviews


    Set Phasers To Sleep.

    Worrying about being attacked by icy gremlins is a really good way to lose a good night’s sleep, but the Marmot Phase 30 Degree Down Sleeping Bag will keep those chilly little demons at bay. The Phase 30 will keep you comfortable during spring, summer, and fall adventures whether you’re sleeping under the stars or in the back of your car, and the water-resistant down and fabric won’t get soggy with dew if you opt to fall asleep looking at Orion.

    There’s more to the Phase than warmth, though. It’s lighter than a feather (well, a whole mess of feathers), and has slightly stretchy baffles so you can comfortably work on your sleep-dancing. Marmot even hooked up an internal pocket, so you can have your light handy when you wake up in the wee hours needing to explore the woods.

    • A water-resistant down bag for cozy three-season sleep
    • EN rated to 30 degrees Fahrenheit
    • 850-fill down features a water-resistant treatment to fight off dew
    • Pertex Quantum GL fabric keeps the down dry and locked in place
    • Full-length two-way zip lets you focus on sleep, not snagged zippers
    • Internal stash pocket holds a headlamp or midnight snack
    • Stretch baffles make it easy to sleep on your side and move your legs
    • Stuff and storage sack included
    • Item #MAR013I

    Tech Specs

    10D Pertex (100% nylon ripstop)
    850+ fill goose down, Down Defender
    left zip, full-length
    Max User Height
    [regular] 6ft, [long] 6ft 6in
    Shoulder Circumference
    [regular] 60in, [long] 62in
    Hip Circumference
    [regular] 58in, [long] 60in
    Foot Circumference
    [regular] 45in, [long] 47in
    Bag Length
    [regular] 80in, [long] 86in
    Fill Weight
    [regular] 8.5oz, [long] 10.6oz
    European Norm Comfort Rating
    European Norm Lower Limit Rating
    Stuff Sack
    Stuff Size
    6 x 12in
    Claimed Weight
    [regular] 1lb 1.6oz, [long] 1lb 4.6oz
    Recommended Use
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    So far so good!

    • Familiarity: I've used it several times

    The best part about this bag is how small it gets. I have it in a Sea to Summit waterproof compression sack, and with my inflatable pillow, it's the size of a kids basketball. Then when you unpack it, and let it recover (never store your sleeping bag compressed) it's got 3-4" of loft, and is a super comfortable bag! I've only used it in mid 40s temps, but I wasn't cold at all, I was even hot! Paired with my UL Sea to Summit pad, it makes an amazing backpacking combo. I can't wait to use it for years to come.

    Nice light bag

    • Familiarity: I've used it several times

    I read a review on Outdoor Gear Lab which calls this a 40 degree bag, mislabeled as a 30 degree bag. I own a Western Mountaineering 30 degree bag, so I figured I had some basis for comparison. The WM bag is about 15 years old and contains similar quality down, but is not the water-resistant kind. I do a certain amount of backpacking in areas that get substantial condensation.
    Anyway, I would probably call the Phase 30 more like a mid 30's bag, at least for me. This is a very light sleeping bag, and I used it with a silk liner, midweight base layer and a marmot driclime windshirt; pretty typical in my case. At temps in the high 30's I was not cold, but feeling a bit of a chill in the legs and feet. The next two nights were warmer and I did not even zip it up completely. Springtime weather, you know, can't make up its mind.
    I got mine at the recent sale price. It's an ultralight bag; expect the zipper to be dainty and the fabric fragile. I'm used to it. If you need a bombproof bag you are going to have to carry the extra weight. Enjoy the journey.

    Super duper lightweight

      Unbelievably light and compressible. Can't wait to test this out once the mercury goes above zero. The zipper is definitely easily snagged, but the other benefits of weight, size, and quality can't be stressed enough.

      Super duper lightweight

      6 Stars!

        "The Marmot Phase 30 . . . compared to the best-of-the-best bags . . . is still lighter weight, roomier, and more compressible . . . from every standpoint, this is one of the very best sleeping bags currently available". Having now purchased one from Backcountry, I agree with this quote from Outdoor Gear Lab.
        Zipper: The tiny zipper snags easily. You have to be careful, but it doesn't look like it will break. Personally, I'd rather have a tiny 3/4 length zipper on an UL bag then a larger 1/3 length zipper.
        Comfort Range: For me this was critical. I have now spent a night in this bag at an inside tent temperature of 32F (0C) with NO ISSUES. (Male, no socks, only shorts + a quick-dry shirt, mat rated at R8).
        If you like this review, please give it a recommend.