In stock
As low as $590.00

An ultra-light winter bag, ideal for those actively wanting to push the envelope in super-alpinism.

Good Night's Sleep Temperature:
Comfort Limit:
Total Weight:
1075g / 38oz
Fill Weight:
605g / 21oz
Pack Size:
27cm x 25cm x 21cm
Check Size Guide for Details of All Lengths

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  • DRILITE® LOFT™ XERO 10D outer shell is ultra-light, highly breathable and water-resistant
  • 605g of 90-10 Russian Goose Down with a minimum fill power of 800
  • Alpine fit with EXL® system improves loft and maximises thermal efficiency
  • Trapezoid baffles throughout
  • Ground level side seams with V-side baffle
  • 7 baffle low volume anatomically shaped hood
  • 6 baffle anatomically shaped and offset foot-box
  • Full length Gemini™ zip baffle and integrated neck collar with Lode Lock™ closure
  • DRILITE® LOFT™ XERO 10D inner foot-box and hood lining
  • Supplied with waterproof roll-top stuff-sack and storage cube
  • More Information
    Product Code ME-003503
    Colour N/A
    Additional Image Block Optimised Extreme Alpine, EXL Collar, Drilite Loft Xero
    Activity Summer Alpinism, Winter Camping, Winter Alpinism, Expedition, Polar
    sleep_sort No
    We Recommend No
    Enable External Stockist Button Yes
    Content BUY NOW AT REI
    Hyperlink https://www.rei.com/product/153203/mountain-equipment-xeros-sleeping-bag
    Background Color No
    Logo External Stockist /r/e/rei_5.png


    Length Inside (a) 190cm/75in 205cm/81in
    Max Width Inside (b) 75cm/30in 75cm/30in
    Inside Foot Width (c) 50cm/20in 50cm/20in
    Max User Height 185cm/73in 200cm/79in
    Total Bag Weight 1075g/38oz 1100g/39oz
    Total Fill Weight 605g/21oz 6217g/22oz
    Packed HxWxD 27x25x21cm/11x10x8in 28x25x22cm/11x10x9in

    800+ Fill Power Goose Down

    Our very best Eastern European goose down. Sourced from Western Russia, with an actual minimum down cluster content of 93%* & individually tested to ensure a minimum fill power of 800 cubic inches & DOWN Codex approved.

    Drilite Loft

    Exceptionally light, highly breathable and water resistant shell fabric used to protect down inside sleeping bags and clothing.

    • Optimised

      Trapezoid 14:7cm baffles running horizontally throughout the main body have been combined with a full EXL® system (both top and bottom) on the inner to minimize dead air space, reduce drafts and maximize loft. This strikes the ‘sweet-spot’ for lightweight expedition bags, removing weight from the bag’s main structure whilst maintaining higher levels of both loft and down control. However, mindful of their need to work in extremis, overall performance is then strengthened by the addition of a V-block side baffle, 6 baffle foot piece and 7 baffle hood.

    • EXL® Collar

      Our neck collar with EXL® improves the thermal efficiency of our integrated neck collars. Elasticated stitching is used in addition to our normal adjustment system to allow the collar to gently wrap around the users neck providing improved thermal efficiency.


      Exceeding the impressive 1500 mm hydrostatic head of the original DRILITE® LOFT™ but with a staggering weight of only 28g/m2, DRILITE® LOFT™ XERO is a class-leading fabric for the most serious users: it’s amongst the lightest highly water resistant shell fabrics in the world. Ideal for Super Alpine climbing and the most lightweight expeditions where protection, pack size and weight are critical to success and even survival.