There are 3 criteria that determine your choice of sleeping bag: the temperature of your sleeping environment, ease of transport & sleeping comfort.
Warmth corresponds to the external ambient temperature during the night.
Today, there are 3 main temperature categories :
- Warm, which is above 20°
- Mild, which is between 10 and 20°
- Cold, which is between 10 and 0°
2. Ease Of Transport
Ease of transport is determined by weight and compactness.
the sleeping bag will be more comfortable so heavier and more compact.
Comfort will always take precedence when it comes to camping.
When trekking, your mattress will be thinner so it's easier to carry.