Ultra-light and technical, our Spark™ Series sleeping 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.

The secret to the impressive performance is a combination of premium materials and careful design. The 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.

Our ULTRA-DRY Down™ water-repellent treatment protects the down from external moisture and condensation from the inside of the bag, virtually eliminating the negative effects moisture has on down. The ULTRADRY 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.

• Sewn through construction minimises weight
• ULTRA-DRY Down 850+ Loft 90% Down Cluster Premium Goose Down certified Responsible Down Standard (RDS)
• Sewn through vertical baffles on chest optimises position of down to prevent it moving during use
• ½ zip with single slider aids access while keeping weight to a minimum
• Updated sizing provides extra room for both shoulders and hips while still maintaining insulation efficiency
• NOTE: This bag is not designed to pair with another

Insulation Type; Down

Down; 90% Premium Goose Down

Fabric; 10D Nylon Shell

Fill Power; ULTRA-DRY Down® 850+ Loft

Fill Weight; Regular: 300g, Long: 345g

Shape; Contoured Mummy

Temp Rating; EN 4°c Comfort to -2°c Lower

Weight; Regular: 490g, Long: 560g