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Mountain Equipment Extreme Alpine Xeros Regular Sleeping Bag ME-003503 - Zip Left - Crimson

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Description of Mountain Equipment Extreme Alpine Xeros Regular Sleeping Bag ME-003503 - Zip Left - Crimson

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


  • DRILITE® LOFT™ XERO 10D outer shell is ultra-light, highly breathable and permanently waterproof due to PU coating
  • Inner material: Ultrasoft™ 20 - 20D Nylon and DRILITE® Loft 20 - 20D Nylon in foot-piece and hood
  • 605g of 90/10 Russian Goose Down with a minimum fill power of 800 cuin
  • Alpine fit with EXL® system maximises thermal efficiency
  • Trapezoid baffles 14:7 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
  • 140cm, 2-way YKK® zipper
  • Supplied with waterproof roll-top stuff-sack and storage cube
  • Good Night's Sleep Temperature: down to -14°C/7°F


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.

Ultrasoft™ 20:

Ultrasoft™ 20 is a lightweight, quick-drying and highly breathable material used in many sleeping bags. The super-fine, densely woven yarn becomes a light and dense fabric. It weighs only 36g/m² and is exceptionally tear resistant for its weight.

Alpine Fit:

The overall narrower cut sleeping bag is designed to optimise thermal performance while keeping weight as low as possible.

Ground-Level seams:

The seams on the long side of the sleeping bag are further offset towards the floor. This improves thermal efficiency and the baffles on the top of the bag cover the body almost completely. Cold bridges, which tend to develop on the side, are minimized.

Horizontal 14:7 Trapezoidal baffles:

Trapezoidal baffles have slightly steeper side walls, are lighter than V-baffles and still offer a large enough overlap area to minimize cold bridges and prevent heat loss. The down has enough room to expand and less down is needed to achieve the desired heat output.

Heat collar with Lode Lock™ closure:

Push buttons were often cumbersome to close or accidentally opened. Velcro scratched the neck. The Lode Lock™ closure with a special guide closes almost by itself thanks to a light magnet. Accidental opening is avoided. A short pull on the opening loop releases the mechanism quickly.

V baffles:

V-baffles best stabilize the material. Due to large overlapping areas, this design is particularly heat-efficient and minimizes cold bridges. The slightly heavier construction ensures maximum thermal performance in extreme applications.

EXL® Zones:

The elastic seams of EXL® technology contribute to higher thermal performance as the inner material of the sleeping bag fits closer to the body, reducing unnecessary air space. At the same time, the material gets more room for maximum loft. The weight is not increased.

Gemini™ baffles:

The Gemini™ system is considerably lighter than previous baffles designs, very efficient, requires little space and offers maximum protection. Over the entire length of the opening, counter-rotating V-baffles have been integrated into the sleeping bag, which have a much larger contact area when the sleeping bag is closed. This results in a significant reduction in heat loss at this critical point.

DC7 hood:

The construction with 7 baffles is the optimal solution to keep the down in position around the head and to offer the best heat performance. The anatomically cut hood encloses the head precisely and dispenses with unnecessary weight. It can be easily adjusted with one hand with smooth-running laces and compressed to a small pack size.

Trapezium 6 foot part:

A foot part with 6 chambers in high-end construction for the most extreme conditions. The sophisticated design combines the "Bulls Eye" concept with the anatomically cut "Shark Toe" shape. The end sits like a cork in the foot part and minimizes cold bridges.


The Down Codex® guarantees animal protection and animal welfare. Forced fattening and live plucking are excluded. Down is a pure by-product of food production and no solvents are used for cleaning.
Down tracking: Each product contains an individual code that can be entered on the Down Codex® website. This allows details on the origin of the down in the product and an IDFL Animal Welfare Report to be viewed.

Contains non-textile parts of animal origin.
Dimension: length 190cm, wide shoulder 75cm, wide foot area 50cm
Filling: Goose Down 90/10, fill power 800+ cuin
Included in delivery: incl. stuff-sack and storage bag
Material name by manufacturer: DRILITE® LOFT™ XERO, Ultrasoft™
Weight supplement: manufacturer information
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Fact Sheet of Mountain Equipment Extreme Alpine Xeros Regular Sleeping Bag ME-003503 - Zip Left - Crimson

Product Name: Mountain Equipment Extreme Alpine Xeros Regular Sleeping Bag ME-003503 - Zip Left - Crimson
Manufacturer: Mountain Equipment
Item Code: MOE359050
activity: Outdoor
gender: men, unisex
recommended body height: 185cm
packing size (l/w/h): 270/250/210mm
sleeping bag / pad version: Sleeping Bag
insulation: Down
sleeping bag shape: Mummy Sleeping Bag
comfort temperature: -5°C
temperature limit: -12°C
extreme temperature: -31°C
fill weight: 605g
neck collar: yes
sleeping bag zipper: left
Number of persons: 1
Model year: 2021
Season: Autumn/Winter
Color: Red
weight: 1075g
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