Mummy sleeping bags for trekking, camping and winter tours
A mummy sleeping bag follows the shape of the body and tapers towards the feet. This creates less unnecessary interior space that needs to be warmed during the night. At the same time, the close-fitting shape allows for low weight and a compact pack size.
This makes mummy sleeping bags particularly interesting for trekking, hiking, bikepacking, mountaineering and winter use – but also for camping, if you prefer a more compact sleeping bag.
At Grüezi bag® you will find mummy sleeping bags for different temperatures and uses: from lightweight summer models to versatile 3-season sleeping bags to highly insulated winter sleeping bags.
Which mummy sleeping bag is right for me?
The mummy shape alone doesn't tell you which sleeping bag is right for you. The most important factors are temperature range, size, insulation, weight, and your intended use.
1. Select by temperature
Choose your sleeping bag first according to the temperatures you can actually expect on your tour.
For standard-tested adult sleeping bags, the comfort temperature is a particularly important guideline for selection. Limit and extreme temperatures have a different meaning and should not be equated with personal sleeping comfort.
Understanding comfort, limit, and extreme temperatures →
2. Pay attention to the correct size.
A mummy sleeping bag should fit close to the body, but it shouldn't restrict you.
Too little space can cause your shoulders, knees, or feet to press against the insulation. Conversely, a sleeping bag that is significantly too large creates additional space that also needs to be warmed.
Therefore, choose the size that fits your height, shoulder width and sleeping position.
Finding the right sleeping bag size →
3. Choose the appropriate insulation
Grüezi bag® uses different insulation concepts in its mummy sleeping bags. These differ in aspects such as weight, pack size, and moisture management.
DownWool® 2.0
DownWool® combines 70% down with 30% wool . The down provides loft and enables lightweight, compact constructions. The wool complements the filling with its moisture and temperature management.
These models are particularly interesting for trekking, bikepacking and tours where weight and pack size are important.
Learn more about DownWool® 2.0 →
Alpine Wool
AlmWolle sleeping bags place a greater emphasis on wool insulation. Wool can absorb and release water vapor, making it particularly suitable for applications where moisture and sleeping climate are important.
Learn more about wool sleeping bags →
DownWool Hybrid
For particularly warm winter sleeping bags, Grüezi bag® uses a hybrid construction of separate down and wool insulation layers.
These models are designed for cold to very cold conditions.
For which tours is a mummy sleeping bag suitable?
Trekking and hiking
When you're carrying your own gear for many kilometers, weight and pack size are crucial. The close-fitting shape of a mummy sleeping bag is therefore particularly well-suited for backpacking trips.
bikepacking
Storage space on a bicycle is limited. A compact mummy sleeping bag leaves more room for clothing, food, and other equipment.
View ultralight sleeping bags →
Campsite
A mummy sleeping bag can also be the right choice for camping, especially if you prefer to sleep close to your body or still want to keep weight and pack size low.
If, on the other hand, maximum freedom of movement and a spacious sleeping experience are more important to you, a blanket sleeping bag might be a better fit.
Compare mummy sleeping bags and rectangular sleeping bags →
Winter tours
For cold nights, many highly insulated sleeping bags are designed in a mummy shape. The close-fitting design can help reduce unnecessary bulk.
However, the temperature range of the specific model always remains crucial.
Discover extra warm sleeping bags →
Does a mummy sleeping bag have to be tight?
No. A mummy sleeping bag should be cut close to the body, but still offer enough space for relaxed sleeping.
Especially if you move around a lot at night or have broader shoulders, it's worth taking a look at more generously cut or wide models.
The right shape is always a compromise between freedom of movement, weight, pack size and heat utilization.
What features are useful in a mummy sleeping bag?
Depending on the model, different details can improve sleeping comfort.
These include, for example:
- thermal collar to reduce heat loss in the neck area,
- Hood and face baffle in models designed for cooler conditions,
- Foot ventilation for increased air exchange at warmer temperatures,
- Pillow compartment for a fixed pillow or clothing as padding,
- Two-way zipper for flexible ventilation
- Anti-snag system to reduce trapped fabric.
The features that are actually available depend on the specific sleeping bag.
Sleeping bag features in detail →
Mummy sleeping bag or blanket sleeping bag?
No single sleeping bag shape is inherently better.
A mummy sleeping bag is particularly suitable when weight, pack size and a close-fitting design are important.
A blanket-style sleeping bag offers more freedom of movement and can be fully opened in many models.
If you're still undecided between the two options, you'll find a direct comparison in our guide.
Mummy or blanket – which shape suits me best? →
Frequently asked questions about mummy sleeping bags
What is a mummy sleeping bag?
A mummy sleeping bag follows the shape of the body and becomes narrower towards the feet. This reduces unnecessary internal volume and allows the design to be optimized for weight and pack size.
Is a mummy sleeping bag warmer than a blanket sleeping bag?
Not automatically. With comparable insulation and construction, a body-hugging design can utilize heat more efficiently because less interior space needs to be heated. However, the actual heat output depends on the temperature range of the specific model.
Is a mummy sleeping bag uncomfortable?
Not necessarily. A well-fitting mummy sleeping bag should be close to the body but still offer sufficient freedom of movement. For wider body shapes or those needing more space, there are correspondingly more generously cut models.
Which mummy sleeping bag is suitable for trekking?
When trekking, temperature range, weight, and pack size are particularly important. Lightweight DownWool® models are therefore especially interesting if you're carrying your sleeping bag yourself over longer distances.
Which mummy sleeping bag is suitable for winter?
For winter tours, you should choose a model whose temperature range matches the expected conditions. Grüezi bag® offers, among other things, highly insulated DownWool hybrid and AlmWolle models.
Finding the right mummy sleeping bag
A good mummy sleeping bag isn't simply one that's as tight or as warm as possible. It should fit your body, your trip, and the temperatures.
Therefore, first choose the required temperature range, then the correct size, and subsequently insulation, weight, pack size and desired features.
You can use the filters on this page to narrow down the selection directly according to your requirements.
Select the correct temperature range →
Determine sleeping bag size →
Compare sleeping bag styles →
Go to the sleeping bag guide →
