One Planet down sleeping bags enjoy a loyal following from people around the world who appreciate top quality, performance and loads of features.

How warm will I be?

Three things affect how warm you will be in a particular sleeping bag.

• First, is the environment. Is it cold outside, what are you using for shelter, are you in a breeze, are you sleeping on a well insulated mat.
• Second, is you. Are you a hot or cold sleeper with a fast or slow metabolism. Do you sleep in the buff, rugged up or somewhere in between. When did you last eat and drink. Both you and your environment make a huge difference to how warm you sleep and we can't control either of them.
• Third is the sleeping bag.

Temperature rating in accordance with EN 13537”

Our range consists of in excess of 60 sleeping bag models, (Including sizes) not to mention the endless variations in custom filled models. It is impractical to test every model and size so In accordance with the standard we have chosen and test a cross section of our range enabling us draw logical parallels to fill the gaps. We continue test new bags to increase our knowledge bank. The tests are preformed at the Kansas State University to standard EN 13537

What is EN 13537?

EN 13537:2002 Requirements for Sleeping Bags is the official European Standard for the labeling of sleeping bags. EN13537 applies to all sleeping bags with the exception of sleeping bags for military use and sleeping bags for extreme temperatures (i.e. comfort range below -25ºC). The standard was published in 2002 and has now been adopted in most European countries.

• The EN 13537 Comfort rating is based on a standard woman having a comfortable night's sleep.
• The EN 13537 Lower Limit is based on the lowest temperature at which as standard man is deemed to be able to have a comfortable night's sleep.
• The EN13537 Extreme rating is a survival only rating for a standard woman. "In the risk range a strong sensation of cold has to be expected and there is a risk of health damage due to hypothermia." This is an extreme survival rating only and it is not advisable for consumers to rely on this rating for general use. The best guideline temperatures for purchase decisions are the Comfort and Limit ratings.

For more infomation about EN 13537 please download PDF document.