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XT Polaris Water Repellent Down Sleeping Bag

  • REGL Regular length bag, left hand zipper
    LRGL Large length bag, left hand zipper

    View Sizing Guide

    Sleeping bag size chart

    Kathmandu offer bags in the following sizes:
      Mummy Semi-Rectangular Rectangular
    Small 72cm x 197cm    
    Regular 70cm x 206cm 72cm x 211cm< 76cm x 211cm
    Large 72cm x 220cm 74cm x 225cm 78cm x 225cm

    Mummy bags, with their wider cut shoulders and narrow feet are the most efficient when it comes to weight and warmth. These bags conform more closely to your shape and only require minimal body heat to warm up. They encase you ‘like a mummy’ and may be restrictive and less roomy than other bags.


    Semi-Rectangular bags with their tapered foot (more room than the Mummy) and contoured hood are a good compromise. These bags provide ample sleeping space at the torso for comfort.


    Rectangular types offer more space and are cooler than others, letting you move easily within the bag. Because of the larger top opening, heat can escape more easily.

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    For expeditions

    The Polaris XT is our high performance alpine expedition sleeping bag specifically designed for demanding alpine environments. It's state-of-the-art, water repellent DownTek fill is superior to normal down, maintaining insulation even when wet, and it has a ¾ zip for reduced weight and better thermal efficiency. 

    Need a down care cleaner to keep your down gear immaculate?

    Features & Specs

    • DownTek fill – which maintains its insulation even when wet
    • 3/4 zip for reduced weight and better thermal efficiency
    • Efficient mummy shape
    • Pertex® Endurance fabric


    Comfort Level Celsius Fahrenheit
    Comfort -9 15.8
    Transition -16 3.2
    Risk -38 -36.4

    Regular L 210cm x Shoulder Width86 cm x  36cm Foot Width
    Large L 223cm x Shoulder Width 91cm x  40cm Foot Width

    Outer 30D 364T DWR Breathable & 1000mm rating
    Outer Fabric of Pertex Endurance 30D 364T Nylon Ripstop
    Fill 700 loft, 90/10 Goosedown

    Size R 1.42kg
    Size L 1.52kg

    Customer Rating
    See Ratings Summary

    Customer Reviews

    XT Polaris Water Repellent Down Sleeping Bag is rated 3.9 out of 5 by 13.
    Rated 5 out of 5 by from Best sleeping bag I've owned I took this Sleeping Bag to Northern Pakistan and slept in it in the harshest of environments. It was amazing - Not only did it stand up to the tough alpine trip, but it kept me super warm in temperatures that plummeted well below zero. Specs wise - the feather fill is warm and puffs up after being stored, nothing leaked from the stitching. The zipper is really smooth plus the water protection protected me from the dew sleeping out. It was awesome to get to the end of a day of adventuring and know this bag was waiting!! Cheers Kathmandu for a great product!!!
    Date published: 2017-12-16
    Rated 5 out of 5 by from Great bag This is the type of bag I dreamed of as a teenager in Scouting. It is really well made, very well designed, packs up unbelievably small, incredibly warm. I had a bad experience buying a bag like this on line and when it puffed up it looked like a lilo with a hole in it. This bag puffs up like the advertising image and is well plush. This bag is the rolls royce of bags. I usually end up using it open like a doona because it is incredibly warm.
    Date published: 2014-12-15
    Rated 5 out of 5 by from Warm! I bought this bag after a trip spent shivering in my previous down bag when hiking some mountains in winter... it's a bigger bag, about twice the size of my previous bag when stuffed and a bit more weight too, which made me think long and hard about getting it, but I'm glad I did as it's really warm! I happily slept through snow in a 3 season tent in this thing (but I really didn't want to get up the next day :p). It's too bulky and hot to be thought of as a bag for all seasons - you'd melt in the summer months in this.
    Date published: 2016-09-02
    Rated 5 out of 5 by from Great bag for longterm use!! I bought this bag a year ago and slept in it almost every night in a hut or camping for 6 months while doing the South Island Te Araroa and an extended cycletour of NZ over summer and then a 2 month walk through Scotland in springtime. It has stood up well to heavy use; though I did use a silk liner to protect it. The zips still work well and nil feathers have leaked from stitching. I have washed it 3-4 times as per the instructions and it has puffed up well again. Was grateful for the water protection as this stopped it getting drenched from condensation in the tent some mornings. I was never cold - though was obviously tramping/camping at lower altitudes; not mountaineering in very cold temperatures. In warm temperatures was comfortable unzipped. It is not the smallest bag but does compress well - I bought a 2-6L waterproof compression sack and kept it in that while travelling. This sleeping bag has been a great investment - I'm always grateful to get into it at the end of a long day and know it will keep me warm and dry. Thanks Kathmandu for a great product!!!
    Date published: 2016-11-26
    Rated 5 out of 5 by from Best Purchase ever! I just recently bought this bag and I am so happy with my purchase! It's defiantly the best sleeping bag that I have ever owned. It lofts up just like the picture and is extremely warm. When it was delivered to me I slipped into it and was very hot almost instantly so it will defiantly hold up in those cold climates! I really like the draft collar inside the bag, and the tightening on the hood to close around your face. When the bag is on sale, it's very hard to find a bag better than this one :)
    Date published: 2018-10-26
    Rated 5 out of 5 by from So comfy Wasnt sure on value for money but Im so happy with it!! It’s been tested in -5 and it was toasty, the zip came in handy. Definitely wouldnt hestotate buying another at this price.
    Date published: 2018-08-18
    Rated 4 out of 5 by from Used this bag on one occasion now on a -1 night camping and was very warm. Much better than the older model (which I have also) with the fabric and zipper a big improvement and also larger dimensions Only concern is that is packs larger than I would like and expected it to pack smaller. Overall I think this bag is hard to beat for the price when on special.
    Date published: 2016-07-15
    Rated 2 out of 5 by from Stuffed size too big This bag when stuffed takes up half of my 65l pack, and does not fit in the bottom sleeping bag compartment! Purchased online and unsighted as all the stores I tried did not have it in stock. Caveat emptor!
    Date published: 2016-01-28
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