Our Spark™ Series bags is what you reach for when you need a high performance sleeping bag but don’t want to be weighed down by one.

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.

Specifications

CONSTRUCTION AND MATERIALS

The secret to the impressive performance is a combination of premium materials and careful design. The RDS 850 Loft premium goose down, light-gauge #3 YKK zip and high performance 10D Nylon shell and 7D lining fabrics set the stage for superior performance. These materials are combined with a contoured mummy design for efficient insulation, and that mummy design is then tweaked for each model to best fit the use scenario.

The ULTRA-DRY Down™ protection also makes the Spark™ an impressive hard-alpine or adventure racing bag, where every gram is counted and down has never been a viable option.

• Ultralight 7D fabrics for minimal weight and packed size
• RDS 850 Loft Premium Goose ULTRA-DRY Down™ for maximum insulation value
• Vertical box baffles in the torso area accommodates extra down and boosts warmth around the core, vertical baffles on chest optimises positions of down to prevent it moving during use
• Lower part of the bag uses a sewn through horizontal baffle construction to minimise weight
• ½ zip with two sliders aids access and allows ventilation from mid-section of bag
• Draft tube prevents heat loss through the zipper
• Includes hood draft collar
• Shell: 100% Nylon, Lining: 100% Nylon, Primary Filling Material: GOOSE DOWN (Min. 90% Down), Stuffsack: 100% Nylon excluding Trims