Sleeping Bags

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Choosing a sleeping bag can be daunting - we're suggesting 4 steps that may make it easier..

Step 1 - Decide the EN Rating that you need? - The EN13537 is the independent standard is used by nearly all reputable sleeping bag manufacturers and it produces two key ratings, the first is the 'Comfort Rating' which is the lowest outside air temperature at which a standard Woman can sleep comfortably in the bag. The second is the 'Lower Comfort Limit' and is the lowest outside air temperature at which a standard Man can sleep comfortably in the bag.

Both these ratings assume the sleeper wears a baselayer, hat, socks and insulating pad. In theory  Men should be interested in the Lower Comfort Limit, and Women the Comfort rating but there are other factors that will affect how warm a bag we need such as... will we be in a two skin tent or single skin? Mountain hut or bivy bag? Are we prepared to wear more clothing when needed? What about a sleeping bag liner? How good is our sleeping pad? Etc.. For a fuller discussion on EN Ratings and other factors... READ MORE.

Step 2 - Decide on the type of filling - Down or Synthetic? - the filling provides the insulation and stops you getting cold. Nearly all the bags we sell are filled with good quality 'down', this is because it beats any synthetic insulation hands down when it comes to keeping us warm for a given weight of filling and also packs down a lot smaller. Given the better performance of down sleeping bags versus synthetic equivalents why would anyone choose to buy a synthetic bag?... READ MORE.

Step 3 - Which Size and Shape do you need? - The insulation in the bag keeps you warm by trapping a layer of still air around your body, thus reducing heat loss by Convection. It is easier to do this if there is less volume of air to keep still, this explains the popularity of Mummy shaped bags which tend to be warmer for a given weight because there's less air to keep still, but that's no good if you feel restricted and can't sleep because of it. Larger bags or rectangular ones may be more comfortable for you and it may be worth the extra weight... READ MORE.

Step 4 - Which Features & Construction Methods are important for you? - Features may not make your sleeping bag warmer per se, but they may make it easier to get in and out of, easier to regulate temperature or protect you against draughts and moisture, all important considerations.

  • Zippers - long, short, on the side, on the top, around the foot... READ MORE..
  • Differential Fill - migration of down, backless sleeping bags...READ MORE..
  • Baffles - single zip, double zip, shoulder baffles...READ MORE..
  • Quilting methods - Stitch through, box wall, slant wall...READ MORE..
  • Protecting the Down filling - Water resistant and Waterproof shell, Hydrophobic Down...READ MORE..