Spark Sp0/SpI/SpII/SpIII/SpIV Sea To Summit Sleeping Bag

The thermal performance of the Spark Sp 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 Spark Sp0

- Ideal for adventure raids in the middle of summer or fast hikes.
- Sewn like a quilt to minimize the weight and to maintain a good position.
- Lining to significantly increase the warmth.



• Version Spark SpI

- Structures sewn during the design of the down that allow to minimize the weight.
- Vertical padding at the torso location that optimizes the placement of the down to prevent it from shifting during use.
- A half-zip consisting of a single zipper for better access and minimal weight.
- Comfortable room at the shoulders and hips.



• Version Spark SpII

- Features additional vertical down padding for added insulation.
- Horizontal padding on the lower part of the bag to minimize weight.
- Double zip zipper that allows you to easily slip into the bag.
- The padding included in the zipper prevents heat loss.
- This version has a hood and a collar.



• Version Spark SpIII

- Padding divided into H chambers to contain excess down and limit cold areas.
- The design of the sarcophagus type sleeping bag is suitable for expeditions. It is both light, compact and offers additional space for sleeping dressed while guaranteeing very good freedom of movement.
- Full side zipper with two pullers for easy access and additional ventilation options.
- Maximum insulation: zipper with bead, padded front collar and hood to prevent heat loss.



• Version Spark SpIV

- The warmest sleeping bag in the Spark range.
- Padding divided into H chambers to contain excess down and limit cold areas.




Technologies used:

• 850+ loft insulation



The Loft is a size that evaluates the insulation performance/weight of a down. The higher this size, the lighter the down will be for equivalent insulation or the more insulating the down will be for an equivalent weight.
In other words, this size represents the quality of the down.
Each Sea To Summit down is certified by one of the largest laboratories in the down and feather industry, the Down Feather Laboratory (IDFL)


• Traitement hydrofuge Ultra-Dry Down

The Ultra-Dry Down Sea To Summit treatment mitigates the negative effects of humidity on the down.
It protects the down from external humidity and condensation inside the sleeping bag.



• Norme "Responsible Down Standard" (RDS)



The RDS standard helps to move the entire down and feather industry towards breeding practices that respect animal welfare. The standard requires independent, third-party assessments of all aspects of animal husbandry and treatment throughout the supply chain.
Sea To Summit ensures that each phase of the collection process is conducted with consideration for the welfare and ethical treatment of geese.


Help with choosing the size of the Spark Sp Sea To Summit sleeping bag: