Down Sleeping bag Sea to Summit Spark Pro -9C Down - Long

Weighing in at just 860g and boasting a unique swell of over 950+ cuin (for expedition use), the Spark Pro -9 sleeping bag from Australian ultralight and premium travel gear leaders Sea to Summit is top notch in comfort, reaching -9 degrees (men).

The Spark Pro is the successor to one of the biggest mountaineering and expedition favourites, the Spark sleeping bag. This series of the brand is focused on unique performance when both high thermal insulation properties and extremely low weight, as well as compact size in a compressed state, are required. For over 5 years, Spark bags have been the first choice of climbers, mountain photographers and adventurers looking for maximum comfort with minimum weight.

The Spark Pro is suitable for autumn-winter use in our latitudes and for a spring-autumn bag in areas with a colder climate. The model is also suitable for the summer season in the mountains, as it can be unbuttoned all the way and used only as a blanket. Its temperature comfort is -2 degrees Celsius for women and -9 degrees for men. At the same time, its volume in a compressed state is extremely small, and its weight reaches only 860 g.

The mummy shape has a widening in the area of the feet to ensure better comfort when moving and to reduce the risk of freezing of the feet, which are particularly vulnerable. The construction is anatomical and offers optimal heat distribution. The relatively large hood and thick collar allow you to snuggle up tight in the Spark Pro sleeping bag and completely isolate yourself from the cold. The model is compatible with all mummy sleeping bag sheets of the brand.

The outer fabric of the Spark Pro is waterproof - a hallmark of the Spark series bags. Down insulation undergoes a special treatment with hydrophobic polymers called Ultra Dry Down technology. Thus, it achieves a much better performance in wet conditions and does not stop warming even with some wetting. Most down sleeping bags that do not have such a treatment quickly lose their insulating properties in wet weather because the down "clumps up" and the air pockets that ensure heat retention disappear. The down with Ultra Dry Down technological treatment does not allow pilling and retains its property of limiting heat loss from your body for a longer time.

The down in the Spark Pro is extremely high-end goose down with a fill power of 950+ cuin. Typically, products with 650+ cuin swell are considered high-end mountain use. This makes the Spark Pro sleeping bag particularly compact, warm and light.

If you are looking for a four-season sleeping bag with a focus on the winter season, the Spark Pro is an unbeatable choice that combines perfect insulation properties with waterproof down, extremely light weight and compact dimensions in a compressed form.