Rectangle

They offer high thermal performance thanks to their narrow design, which reduces air gaps and heat loss. They are lighter than rectangular ones due to the use of less material. Recommended for hiking, mountaineering, or extreme temperatures.

The comfort temperature is the lowest ambient temperature at which an average woman can sleep comfortably for 8 hours.

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Sleeping bags with a comfort temperature between -9°C and 2°C are recommended for use in Spring, Summer, and Autumn (3 seasons).

It plays an important role, depending on the intended use of the sleeping bag. Ideally, for hiking, trekking, or mountaineering, a sleeping bag weighing less than 1.5 kg is recommended to facilitate transport and reduce the load on the backpack.

On the other hand, sleeping bags with greater weight are preferred for camping or stationary use.