Mummy Sleeping Bag Buying Guide

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Mummy Sleeping Bag Buying Guide

When on a camping trip, the kind of sleeping bag used can decide how comfortable the camper will be during a short summer night or a long winter one. Mummy sleeping bags are becoming an ever more popular choice for campers of all types due to their specialised design, size and shape.

This guide will show buyers the various factors they must consider whilst searching for mummy sleeping bags, and how to go about buying items on eBay.

Mummy Sleeping Bags

Mummy sleeping bags are so called after their shape, which with their thin legs, big hood and tight, body-adhering design does make them look rather like an Egyptian mummy. This tight design is the design of most modern sleeping bags as it is highly effective at trapping in warmth by restricting the flow of air.


The two materials mainly used for sleeping bags are bird down and synthetic fibres like poly fibre. These two different materials have their own advantages as well as disadvantages, with each being favoured by buyers for different reasons.


Made of the soft under feathers, the down typically used in sleeping bags is duck, eider or goose – with prices increasing steadily from duck up to goose down. Down is very effective at trapping warm air inside the bag, and is also much lighter and easier to compress – however it is totally ineffective when wet.


Synthetic material is a popular choice for buyers because of its lower cost, as well as the fact that it stays an effective method of insulation when wet and is easy to dry out. However, synthetic material is heavier, much harder to compact down in size and also not quite as good at trapping warmth as down.

When choosing which sleeping bag material is best for the buyer, they should consider not only which they would find more comfortable, but also where they will be staying – if in a damp climate then synthetic may be more advisable, but if it is going to be particularly cold then buyers may wish to opt for the more expensive but highly heat-effective down.


It is very important that the buyer considers the size of the mummy sleeping bag they wish to purchase, especially if the buyer is going to be carrying around the sleeping bag whilst travelling or trekking. An important part of purchasing a mummy sleeping bag is the compression sack that it usually comes equipped with – this uses straps as well as a drawstring to compress the sleeping bag down to as small a size as possible, making it far easier to carry.

Another important consideration is the different sizes and shape of mummy sleeping bag depending on age and gender. It is important to note the difference, as due to the tight shape of the mummy bag, a sleeping bag that does not fit properly will be too tight in certain areas and empty in others – meaning that there will be a great loss of heat through empty parts of the bag.

Men’s Sleeping Bags

Men’s sleeping bags adhere to the typical body shape of men by giving much more space in the shoulders, and may be larger in size as well to account for the usual height increase.

Women’s Sleeping Bags

Women’s sleeping bags typically feature an increased area around the hips, and a decrease in the size of the shoulders and legs to prevent heat loss through those two areas.

Children’s Sleeping Bags

Children’s sleeping bags need to account for the smaller size of children from adults, and so whilst the overall shape may not change, the size is reduced quite a bit to prevent heat loss from the large amount of unfilled area in the bag.

Purchasing a mummy sleeping bag that is perfectly fitted to the buyer’s shape and size is the ideal way of keeping comfortable and warm when camping. Some bags also feature size measurements so that buyers can make sure that the bag is ideally suited for them before purchase.


The buyer may have noticed that with the modern sleeping bags there are a great deal of temperature and number ratings now as opposed to the slightly more old-fashioned simple ratings of 2-season, 3-season and so on. These ratings actually provide a detailed overview of the environment the bag is capable of coping with – provided the buyer can actually read them and understand. The main temperature ratings used are:




Upper Limit


This is the upper temperature limit at the bag, beyond which the user would be incredibly hot and uncomfortable.

Lower Limit


This is described as the lower limit at which a man could sleep comfortably without being too cold.

Comfort Level


This is the ideal temperature the bag is designed for, and is described as the optimum temperature at which a woman would be neither too hot nor too cold inside the bag.

Extreme Temperature


The emergency temperature of the bag, the extreme level at which a user could sleep in the bag without freezing to death. This may be an important feature for those travelling to arctic circle areas.

This rating system is part of EU legislation designed to regulate all sleeping bag temperature levels and so at the moment only applies to items sold in the EU – though some other countries are beginning to use this rating system as well for its clarity and detail.


Apart from the form-adhering shape of mummy sleeping bags, there are also many other features used to ensure that mummy bags are as comfortable as possible, while losing the minimum of heat while being used. Such features include:


Baffles are the ‘panels’ of many down-stuffed sleeping bags. These baffle walls prevent down from moving about in the bag and becoming pooled in one area, whilst helping to create pockets of warm air. Baffles are also added over zips – familiar to us as the strips of fabric that cover up zips when closed, making them almost invisible, these prevent any loss of heat through those exposed areas.


Unlike the traditional envelope-shapes sleeping bags, mummy bags feature large hoods, which are hats that can be completely drawn over the head – preventing any loss of heat through the head whilst also saving the buyer from having to lie on the ground. When closed, these hoods also minimize the amount of exposed areas around the face, preventing too much air from entering or escaping.


Drawstrings are often used around the hood with a toggle facing inwards, so that when the user has gotten into the sleeping bag they can minimize the amount of exposed area by narrowing down the hood themselves.


Whilst mummy sleeping bags can be very comfortable on their own, some campers like to add extra items to their sleeping area to enhance comfort as well as warmth, if necessary. The main kinds of additions available for sleeping bags are:


Sleeping mats are used by many campers as they are a very simple yet very effective way of not only staying comfortable but also staying warm. The mat puts an extra layer between the sleeping bag and the ground, meaning that the user does not have to lie on the cold ground and lose heat through their back. As well as the yoga mat style sleeping mats, there are also inflatable air beds available that are comfortable to sleep on as well as putting a great deal of distance between the bag and the floor.


Putting a sleeping bag liner on the inside of a mummy sleeping bag is a great way of keeping the user warm, as well as adding a moisture wicking capability that the sleeping bag itself may not have – vital for those campers who may get hot and sweat during the night. These liners are also far easier to remove and wash than sleeping bags. The main materials that liners can be bought in are silk, cotton and fleece, and the buyer should pick the ideal material by considering how warm they will want or need to be.


Some campers find lying on the ground extremely uncomfortable, or cannot sleep unless their head is slightly elevated – and to that end there are many kinds of sleeping bag pillow available to help in providing a comfortable night’s sleep. Some are made to be placed under the sleeping bag, but there are many that are shaped to be able to be placed inside the bag, ensuring that the camper does not slip of it during the night and preventing it becoming dirty. Many of these pillows are inflatable, allowing them to be folded down and tucked away when not in use.

Buying a Mummy Sleeping Bag on eBay

There are many features to consider about mummy sleeping bags, and once the buyer has begun to understand them they must begin to search for them online. When searching for mummy sleeping bags on eBay, the buyer should consider:

  • Price – price is a very important aspect of any purchase, and there are many mummy sleeping bags available on eBay at a range of prices. Buyers can adjust search results to match their budget by using the search preferences, and there are many items available at both Auction and Buy It Now.
  • Material – whatever material the buyer prefers their mummy sleeping bag to be made from, they must keep in mind that the material has a large amount of effect on the final price.
  • Environment – a good rule of thumb to keep in mind is that the colder a temperature the bag is designed for, the more expensive it will be – due to different materials and features used to preserve heat.
  • Local Seller – buying a mummy bag from a local seller is an ideal way of keeping shipping costs down.

If the buyer needs any more guidance on searching, they should make sure to consult eBay’s Search Tips page for advice on achieving the perfect search result. If they have any questions about any of the items they see listed, they should not hesitate to Ask the Seller.


Camping is a fun activity in any climate, and whether it is part of a sport or just a fun trip out it is important that the sleeping bag purchased is perfectly suited to both the buyer and the environment it is expected to perform in. With the help of this guide, buyers should now be able to not only identify which materials, shapes and additions are ideal for them, but also know how to go about buying the perfect mummy sleeping bag on eBay.

When searching for mummy sleeping bags on eBay, the buyer should be made aware of the benefits of using PayPal, eBay’s recommended way to buy with additional eBay Buyer Protection.

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