5/16/2023 0 Comments Dreamie sleeping bagThis is especially important if you plan to fit your sleeping bag into a backpack or will be carrying the bag long distances. ![]() The packed size and weight of the bag should also be taken into consideration. Our Microlite and Summit sleeping bags are good examples of this. Most mummy bags will be single but it is possible to buy left and right handed bags that can be zipped together to create a double bag. A mummy sleeping bag also weighs less than a rectangular bag. The hood of a mummy sleeping bag also helps keep in the warmth. Mummy Sleeping BagsĪ mummy sleeping bag, such as the Microlite 1400, tapers towards the feet and is therefore more fitted than a regular rectangular bag improving heat retention. Rectangular sleeping bags are less effective at retaining heat than mummy bags and are best for indoor use, caravanning and summer camping. These are roomier than mummy sleeping bags and can be fully opened and used as a blanket. Wider comfort temperature range- making it suitable for cold and warm temperaturesĪ basic sleeping bag will be rectangular or ‘envelope’ in shape with a zip around two sides. Lightweight- better warmth to weight ratio For these reasons duck down sleeping bags are well suited to cold but dry conditions Down sleeping bags also take much longer to dry out than synthetic bags. The disadvantage of down is that it easily absorbs moisture when damp and when it gets wet the feathers lose their fluffiness and the heat insulating properties are lost. The warmth-to-weight ratio of a down sleeping bag cannot be beaten by a synthetic bag. The loft of down creates thousands of tiny air pockets which means that down sleeping bags are more effective at trapping warm air and retaining heat. ![]() However synthetic insulation does not retain heat like natural down so for winter trips you may find them colder than a down bag. They also perform better when wet than down bags, retaining around 50% of their insulating ability when wet. A synthetic sleeping bag will be cheaper, easier to clean and require less care than a down sleeping bag. Synthetic insulation is the most common type of insulation used in sleeping bags. Down sleeping bags are made with the fine under feathers from ducks or geese and synthetic sleeping bags, which are filled with man-made insulation, mostly poly-fibres. There are two key types of sleeping bag to choose from. It has an extreme survival rating of -28, meaning it is a bag designed to keep you alive in tougher conditions where there may be a very real threat of hypothermia. Our Everest Down Sleeping Bag is an example of a bag with a high extreme rating. It is not the lowest temperature you will be comfortable in and you should not expect regular use of the bag at this temperature. Put simply, this is the very limit at which the bag will keep you alive without frostbite, or any other temperature related ailments. The ‘extreme’ temperature rating is essentially ‘the survival temperature’. On average women feel the cold more than men so this rating is some degrees above the ‘comfort limit’ for a man. When the bag is used in any temperatures below the ‘comfort rating’ the user is likely to feel the cold. The ‘comfort’ rating refers to the optimum temperature you will feel warm and comfortable sleeping in when in a rolled up position. Temperature ratings will be expressed in comfort (lower comfort and upper comfort limits) and extreme ratings. The rating you choose will depend on where you’ll be using it and what temperature you are comfortable sleeping in. ![]() The temperature rating is an important factor to consider when choosing a sleeping bag. In this category you’ll find our down sleeping bags. Season 4 sleeping bags are for use on cold winter nights where there may also be frost or snow on the ground. Perfect for those who are braving the weather for winter camping and those who feel the cold when they sleep. Season 3 sleeping bags are designed for cold autumn and winter nights where there’s no frost. These bags are also great for those who feel the cold in the summer. ![]() These sleeping bags are ideal for camping in the UK outside the summer months such as kids half term holidays. Season 2 sleeping bags are designed for use in UK late spring and early autumn where nights can get cold. They are also great for indoor use such as kids sleepovers. Season 1 sleeping bags are designed for camping on warm summer nights, so are an ideal choice for those attending festivals. Ratings range from season 1, designed for summer camping, to season 4, designed for cold winter nights. Sleeping bag season ratings are designed to make it easier to choose your sleeping bag.
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