Mountain Equipment Xero 550 (2012)

The Mountain Equipment Xero 550 is a very popular bag for backpackers thanks to its good weight and packed size, coupled with a good temperature rating. There is an EXL elasticated lining, which provides a closer fit than most bags without restricting movement – and this system makes the bag feel a little warmer than others. The bag does not come with a compression stuffsack, though, so you either have to squash it down into your rucksack or buy an additional compression sack for easier packing. The end of the bag is profiled to prevent the feet from compressing the insulation, and the side zip gets a nice wide anti-snag strip and a draught baffle, while the shoulder baffle is particularly wide and well-filled to help trap warm air inside the bag. The hood is also well-designed. To ensure the highest environmental, ethical and animal welfare standards, the sourcing of the down used in the Mountain Equipment Xero 550 is audited through Mountain Equipment’s Down Codex project.

Outer fabric He30

Inner fabric Supersoft

Insulation 93/7 750+ fill power goose down

Compression packed size 19x24cm

Weight 1000g

Lower comfort temp. rating -6 deg C




The Mountain Equipment Xero 550 is the best lightweight sleeping bag in our buyer’s guide.

Review by Graham Thompson

First published in Trail magazine Spring 2012