Rab Lab EN Testing Explained

It’s important to understand that a sleeping bag does not warm you up – its job is to retain the heat that your body generates, preventing you from getting cold. Our ratings describe how well a sleeping bag retains heat when the air exterior to the bag is at a certain temperature. Because all of our bodies are different, what one person needs for a good night’s sleep is not necessarily the same as the next. This means that it is difficult to quantify exactly how warm a sleeping bag is and as such, any rating should be treated as a guide. At Rab, we use the European EN13537 standard to rate the majority of our sleeping bags. EN13537 is a European standard designed to regulate the temperature ratings of sleeping bags across the industry. The test assumes that a ‘standard man’ is 25 years old, 1.73 m tall and 73 kg, while a ‘standard woman’ is 25 years old, 1.60 m tall and 60 kg. The EN13537 rating is determined by using a thermal mannequin to accurately record a series of measurements from the ‘Upper limit’, the temperature at which a person can sleep without perspiring, all the way down to the ‘Extreme limit’, which determines the minimum temperature at which a person can survive. For our EN13537 tested sleeping bags we list the three lowest temperature ratings; comfort, limit and extreme as well as our own Rab Sleep limit. Learn more 👇 https://rab.equipment/guides/sleeping-bags Explore our range of sleeping bags 👇 🛒// https://rab.equipment/sleeping-bags/sleeping-bags #W