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Finding the right sleeping mat

Anyone who sleeps outdoors knows: A good sleeping mat is crucial for a restful night's sleep. Whether trekking, camping, or at festivals – it protects against the cold ground and provides comfortable cushioning against uneven surfaces and stones.

A sleeping mat significantly influences how fit you are the next day – true to our motto “Don’t just sleep. Recharge!” Find out here what matters when choosing a sleeping mat and why the models from Grüezi bag® stand out in particular.

What types of sleeping mats are there?

Depending on their intended use, sleeping mats differ significantly:

foam mats
They are robust, lightweight, and inexpensive – perfect for minimalists. They are rolled or folded for transport, but the compact foam makes them rather bulky. Holes don't impair their function, as no air can escape. However, they aren't particularly comfortable, even if the raised bumps might cushion uneven ground. Side sleepers or those with back problems should especially consider switching to an air-filled sleeping mat.
Self-inflating mats
A good compromise between comfort and weight. They largely inflate automatically, but need to be additionally inflated at the end to be truly comfortable.
Inflatable mats
Maximum comfort and protection from the cold with a small pack size. However, these are generally more susceptible to damage – except for the Grüezi bag sleeping mats with their double-layered construction. Ideal for backpacking trips and anyone who wants to sleep comfortably.

Important purchase criteria

When buying, you should pay attention to the following points:

R-value: Indicates the insulation performance (the higher the rating, the warmer it is).
Weight & Pack Size: Crucial for tours with a backpack or with limited storage space, such as kayaks or bicycles.
Material & workmanship: For durability and robustness
Comfort: Thickness and structure of the mat, air-filled/solid foam, low noise level of the surface fabric
Mat shaperectangular or mummy-shaped.

Based on practical experience: we recommend that you always pay attention to these two points:

How warm is the sleeping mat?
How comfortable is the mat?

What does the R-value mean for sleeping mats?

Anyone who delves deeper into outdoor equipment will sooner or later come across a crucial term: the R-valueEspecially with sleeping mats, it is one of the most important factors – and yet many people don't know exactly what's behind it.

The R-value explained simply

The R-value describes the Thermal insulation capacity a sleeping mat. More precisely, it indicates how well the mat prevents body heat from being lost to the cold ground. The R-value therefore determines whether you stay warm at night and for which season your sleeping mat is suitable.

👉 The higher the R-value, the better the insulation.

This means that a sleeping mat with a high R-value will keep you warm even at low temperatures, while a low R-value is more suitable for warm summer nights.

Guidance: Which R-value for which application?

Here is a rough classification for orientation:

R-value 1–2:
For summer and warm temperatures
R-value 2–4:
Suitable for spring and autumn
R-value 4–6:
For cool conditions and slightly below freezing temperatures
R-value 6+:
For winter camping and extreme cold

These values are guidelines – your personal sensitivity to cold also plays a role.

Why is the R-value so important?

In fact, the body loses a large portion of its heat through contact with the ground. Camp beds or air mattresses are also extremely unsuitable: they offer almost no insulation.

Many people underestimate the importance of a sleeping mat and prefer to invest in a high-quality sleeping bag. But even a thick sleeping bag offers limited protection if there's no insulation from below. A sleeping bag only insulates from above, as it's compressed by body weight. Therefore, the sleeping mat must provide insulation from below. So, if a sleeping mat is only rated down to 5°C, then a sleeping bag rated to -10°C will only insulate down to 5°C.

How is the R-value measured?

The R-value is determined in a laboratory under standardized conditions. This measures how much a mat reduces heat transfer. For several years now, there has been a uniform test procedure (ASTM standard), which makes it easier to compare values between different manufacturers.

Therefore, we understand the standard values as technical basis for comparison, not as a guarantee of comfort in every situation. We therefore recommend the specified The comfort range should not be undercut.People sensitive to cold should plan for additional safety margins.

Does a high R-value mean high comfort?

The R-value says nothing about sleeping comfort. A thick air mattress can be comfortable but still provide poor insulation – and vice versa.

Therefore:

👉 The perfect sleeping mat combines a suitable R-value with good comfort.

Conclusion

The R-value is a key indicator when choosing the right sleeping mat. It determines how well you are protected from the cold ground – and therefore significantly impacts how well you sleep.

Comfort

Grüezi bag® sleeping mats combine environmentally friendly materials, well-thought-out designs, top insulation and above all, comfort!

What makes Grüezi bag® sleeping mats special?

Sustainable and functional materials
Low-noise outer fabric, PFC-free impregnation and insulation with DownWool® or wool – a clear plus for environmentally conscious outdoor enthusiasts.

The stuff sack also functions as a pump sack: hygienic to inflate and quick to fill (watch our short video on how to inflate the sleeping mat). https://www.youtube.com/shorts/jLSCCD5wnCM).
Please do not inflate the sleeping mat by mouth, as this prevents moist breath from entering the mat. Germs can form inside the mat, or the moisture can freeze in cold temperatures. Both of these factors reduce the mat's durability, comfort, or insulation.
The non-return valve used is easy to handle; it closes automatically after pumping.

High sleeping comfort
These mats offer incredible sleeping comfort: two separately inflatable chambers, up to 8 cm high, create the feeling of sleeping in a bed outdoors! An additional comfort feature: less air in the upper layer allows the body to sink in gently. This prevents unwanted slipping off the mat.

At the same time, the double-layered construction provides greater security in case of punctures, as in the worst-case scenario, one layer will continue to provide good comfort if the other loses air. A classic in the middle of the night!
The chambers are arranged in a V-shape (V-chamber construction) and the laterally raised chambers provide additional stabilization of your position.
The lower chamber can be inflated more, which means that even when turning, there is no contact with the cold ground.
The Wool Mat Camping Comfort can even be coupled with other models and offers a large family area without a gap between the mattresses.

Good insulation values
Ideal for different temperatures – suitable down to -10°C for summer nights and cooler autumn tours.
Compact design
Despite their comfort, the mats can be rolled up small and are easy to transport.

And which points are important to you?

Why can I still feel cold on a sleeping mat despite a sufficient R-value?

There are many factors that might prevent the temperature indicated on a sleeping mat from being sufficient.

The base is incorrect: The sleeping mats are too thin, and body parts in contact with the mats at specific points (e.g., shoulders) create a cold bridge.
The sleeping mat is too hard, resulting in insufficient sleeping comfort.
The ambient air is colder than the ground: The R-value only measures the resistance to the ground temperature.
When you're sick or exhausted, you get cold more easily. You also get cold faster when you're hungry.
If the day was very hot, you are also more sensitive at night when it cools down.
When the humidity is very high, you feel cold.
A sleeping bag can only retain heat. If you lie down in a cold sleeping bag, it can take a long time for it to warm up. So it's better to walk around the tent 10 times and then get into the sleeping bag.

Tips and Hints

A Grüezi bag® sleeping mat has a maximum load capacity of 120 kg and can be inflated to a pressure of up to 0,03 bar. Before applying pressure to a single point (e.g., by stepping on it), try to distribute the load as evenly and over as large an area as possible across the product.
A sturdy groundsheet is recommended as an additional base. Remove sharp and pointed objects from the sleeping area and keep the sleeping mat away from rough edges.
The following can damage the sleeping mat: high temperatures (heating, open fire, etc.), hot surfaces (e.g., barbecues), extreme weather conditions (rain, hail, etc.). IMPORTANT: Air expands in the sun or in hot rooms. Therefore, do not leave your sleeping mat in direct sunlight or, if necessary, let some air out.
When packing: remove coarse dirt, stones and other sharp or pointed objects, deflate completely and roll up slowly.
During storage: the lifespan is extended by regular cleaning after use with clean water and a sponge. Allow to dry completely, otherwise mold may develop.

to our selection of Grüezi bag sleeping mats >>