Sea To Summit Spark SPII Left Zip UltraDry Down Regular Sleeping Bag Orange

The Spark Series Bags Are Ultra-Light And Technical
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.

Premium Materials and Careful Design
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.

Responsible Down Standard (RDS)
The 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. These bags are impressive hard-alpine or adventure racing bag, where down has not previously been a viable option, and where every gram counts.

Responsible Down Standard (RDS)
All Sea to Summit Down Sleeping Bags use Responsible Down Standard (RDS) certified down.

Mid-Summer Fast Hikes
The Spark SPO UltraDry Down Sleeping Bag is Ideal for mid-summer fast hikes or adventure racing.

Ultralight 7D and 10D fabrics for minimal weight and packed size
RDS 850+ Loft Premium Goose ULTRA-DRY Down for maximum insulation value
Contoured mummy shape for comfort and efficient insulation
Vertical chest baffles prevent down migration and cold spots
Sewn through construction minimises weight
Sewn through vertical baffles on chest optimises position of down to prevent it moving during use
zip with single slider aids access while keeping weight to a minimum