For the couples of the cold weather camping world – the Spark -9C Down Sleeping Bag Double by Sea to Summit offers a lightweight sleeping solution.

Boasting a 10D Nylon construction in the shell, lining, hood, and footbox for lightweight breathability and water resistance on every outdoor retreat, its RDS certified 850+ FILL Power goose down provides both comfort when unpacked and a compact pack down – treated with ULTRA-DRY down water-repellent to protect from moisture on the damper days off the grid. Sporting a Mummy Fit for thermal efficiency and minimal weight too, the technical hood also offers a soft-touch adjustment, sitting deep for a warmer winter-camping experience.

To minimise cold spots, vertical and horizontal chest baffles are present in both the lower-half and base, while a box wall baffle construction exists throughout the entirety of the bag. A -2°C comfort rating and -9°C lower limit also has it suitable for sub-zero temperatures on those cold-weather camping trips, embellished with a durable 3/4-length #5 primary zipper, zip plow, two sliders, and a down-filled draft tube that follows it along the top. Plus, the standard front collar draft helps to trap heat.

For a sack that’s serious about sleeping well in the wild – experience double the outdoor dreaming in the Sea to Summit Spark -9C Down Sleeping Bag Double.

• -2°C Comfort rating, -9°C Lower Limit rating
• 10D Nylon shell and lining
• 10D Nylon waterproof, breathable hood and footbox
• Standard front draft collar
• Single, down-filled draft tube runs along top of all zippers
• Vertical chest and horizontal chest baffles in lower half and base
• Box wall baffles construction throughout
• Mummy Fit for maximum thermal efficiency and minimal bulk/weight
• 3/4-length #5 zipper with zip plow and 2 x sliders
• RDS certified 850+ FILL Power goose down for comfort and compact packing
• ULTRA-DRY down water-repellent treatment for water resistance
• Compatible with separately available Sea to Summit quilts
• 20L compression bag included