Not all sleeping bags are created equal, and what sets the very best apart is often elusive. At Mountain Equipment, we believe that achieving optimum warmth and comfort requires an uncompromising and painstaking approach. We meticulously examine every aspect of our designs through what we call our “Baffle by Baffle” approach. This attention to detail allows us to answer the difficult questions that arise when sleeping bags are put to the test, ensuring that innovative ideas are integral to each bag we create.

Our designs are anything but simple; they embody cutting-edge scientific research, advanced lab testing, and extensive real-world experience. This holistic approach has led to groundbreaking construction technologies and fabric innovations, resulting in sleeping bags that deliver proven and reliable warmth. Each sleeping bag is built better, with an emphasis on continual improvement across insulation, design, and construction technology.

The result is a sleeping bag range that is optimally adapted, lighter and warmer than ever before. By refining every element of our designs, we've achieved significant weight savings and enhanced thermal performance, ensuring you get a good night's sleep no matter the conditions.

We have so much real-world date on our sleeping bags performance we give them a separate “Good Night's Sleep Temperature” rating in addition to the standard temperature ratings. Resulting from a combination of scientific testing, countless field trials and exhaustive expedition testing, this temperature rating provides an indication as to the minimum temperature that we feel the bag should be comfortable to for an experienced user.

We’re so confident in this rating that if you decide your new sleeping bag isn’t quite warm enough, we’ll upgrade your bag to one with a warmer specification, guaranteeing a good night’s sleep.