Anatomically Tapered Box Foot

Ultra-light and technical, the Spark Series bags are designed to keep you as warm as possible while minimising packed weight and size. The Spark Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.  Suggested use : Travel, Adventure racing, Winter Cycle touring, Liner bag, Ultra lightweight Hiking, Ultra lightweight alpine...

Ultra-light and technical, the Spark Series bags are designed to keep you as warm as possible while minimising packed weight and size. The Spark Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.  Suggested use : Travel, Adventure racing, Winter Cycle touring, Liner bag, Ultra lightweight Hiking, Ultra lightweight alpine...

Ultra-light and technical, the Spark Series bags are designed to keep you as warm as possible while minimising packed weight and size. The Spark Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.  Suggested use : Travel, Adventure racing, Cycle touring, Liner bag, Ultra lightweight Trekking/ Hiking, Ultra lightweight alpine...

Ultra-light and technical, the Spark Series bags are designed to keep you as warm as possible while minimising packed weight and size. The Spark Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.  Suggested use : Travel, Adventure racing, Cycle touring, Liner bag, Ultra lightweight Trekking/ Hiking, Ultra lightweight alpine...

Ultra-light and technical, the Spark Series bags are designed to keep you as warm as possible while minimising packed weight and size. The Spark Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.  Suggested use : Travel, Adventure racing, Cycle touring, Liner bag, Ultra lightweight Trekking/ Hiking, Ultra lightweight alpine...

Ultra-light and technical, the Spark Series bags are designed to keep you as warm as possible while minimising packed weight and size. The Spark Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.  Suggested use : Travel, Adventure racing, Summer cycle touring, Liner bag, Ultra lightweight Trekking/ Hiking, Ultra lightweight...

Ultra-light and technical, the Spark Series bags are designed to keep you as warm as possible while minimising packed weight and size. The Spark Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.  Suggested use : Travel, Adventure racing, Summer cycle touring, Liner bag, Ultra lightweight Trekking/ Hiking, Ultra lightweight...

Ultra-light and technical, the Spark Series bags are designed to keep you as warm as possible while minimising packed weight and size. The Spark Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.  Suggested use : Travel, Adventure racing, Summer cycle touring, Liner bag, Ultra lightweight Trekking/ Hiking, Ultra lightweight...

Ultra-light and technical, the Spark Series bags are designed to keep you as warm as possible while minimising packed weight and size. The Spark Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.  Suggested use : Cycle touring, ultra-light hiking, adventure racingSeason Ratings : Indoor/Summer/Spring The secret to the...

Ultra-light and technical, the Spark Series bags are designed to keep you as warm as possible while minimising packed weight and size. The Spark Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.  Suggested use : Cycle touring, ultra-light hiking, adventure racingSeason Ratings : Indoor/Summer/Spring The secret to the...

Ultra-light and technical, the Spark Series bags are designed to keep you as warm as possible while minimising packed weight and size. The Spark Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.  Suggested use : Cycle touring, ultra-light hiking, adventure racingSeason Ratings : Indoor/Summer/Spring The secret to the...

The Alpine Series combines STS most technical sleeping bag features to deliver reliable performance while cocooning you in the highest quality RDS 850+ Loft Goose ULTRA-DRY Down. Designed for high altitude mountaineering and arctic conditions, the contoured mummy design delivers efficient insulation, while our updated expedition sizing provides space for extra clothing to be worn inside the bag. The anatomically shaped and oversized footbox can comfortably accommodate boots when necessary....

The Alpine Series combines STS most technical sleeping bag features to deliver reliable performance while cocooning you in the highest quality RDS 850+ Loft Goose ULTRA-DRY Down. Designed for high altitude mountaineering and arctic conditions, the contoured mummy design delivers efficient insulation, while our updated expedition sizing provides space for extra clothing to be worn inside the bag. The anatomically shaped and oversized footbox can comfortably accommodate boots when necessary....

The Alpine Series combines STS most technical sleeping bag features to deliver reliable performance while cocooning you in the highest quality RDS 850+ Loft Goose ULTRA-DRY Down. Designed for high altitude mountaineering and arctic conditions, the contoured mummy design delivers efficient insulation, while our updated expedition sizing provides space for extra clothing to be worn inside the bag. The anatomically shaped and oversized footbox can comfortably accommodate boots when necessary....

The Alpine Series combines STS most technical sleeping bag features to deliver reliable performance while cocooning you in the highest quality RDS 850+ Loft Goose ULTRA-DRY Down. Designed for high altitude mountaineering and arctic conditions, the contoured mummy design delivers efficient insulation, while our updated expedition sizing provides space for extra clothing to be worn inside the bag. The anatomically shaped and oversized footbox can comfortably accommodate boots when necessary....

The Alpine Series combines STS most technical sleeping bag features to deliver reliable performance while cocooning you in the highest quality RDS 850+ Loft Goose ULTRA-DRY Down. Designed for high altitude mountaineering and arctic conditions, the contoured mummy design delivers efficient insulation, while our updated expedition sizing provides space for extra clothing to be worn inside the bag. The anatomically shaped and oversized footbox can comfortably accommodate boots when necessary....