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.

14

Sleeping bags with a comfort temperature of 12°C and above are recommended mainly for use during the summer months.

Hollow Fiber

Type of synthetic filling that offers better insulation than other synthetics (due to hollow fibers that trap air) and retains warmth even when wet. It is economical and easy to care for. However, it is heavier and bulkier than down and loses its effectiveness over time.

The warmth of a sleeping bag is determined by the fill density inside it, which is measured in grams per square meter (GSM).

60

Suitable for summer.