Trailhead ThII/ThIII Sea To Summit Sleeping Bag

The thermal performance of the Trailhead Th sleeping bag according to EN13537 standard:

The EN13537 standard defines three temperatures, "Comfort", "Lower Limit", and "Extreme" in order to evaluate the thermal performance of a sleeping bag. This standard makes it possible to compare the different models on the market and to help the user in his choice.

- Comfort temperature:

This temperature corresponds to the temperature of use for which one expects to sleep relaxed.
If you are chilly or a woman, use this size to choose the model.

- Lower Limit temperature:

This is the temperature at which a standard human can sleep for eight hours in a curled up position without waking up.
If you consider yourself a high body temperature sleeper, use this value to gauge the coldest temperature the bag can be subjected to.

- Extreme temperature

This is the extreme survival temperature. Between the "Lower Limit" and "Extreme" temperatures, a strong feeling of cold is felt and there may be a health risk (hypothermia). For normal use, the manufacturer does not recommend using the bag under these environmental conditions.
  


• Version Trailhead ThII



• Version Trailhead ThIII





Technology used:

• Wave Loft construction



The Wave Loft construction uses thick layers of synthetic insulation connected in a loop to obtain an additional thickness of insulation and trap pockets of hot air. This provides higher warmth in colder conditions.

Help with choosing the size of the Trailhead Th Sea To Summit sleeping bag: