For the minimalist adventurers after maximum warmth on their outdoor escapes, hit the ups and drops with the Sea to Summit Spark -1C Down Sleeping Bag for lightweight and compact comfort!

Featuring a Mummy Fit for thermal efficiency and minimal weight on those wildlife wanders, the Spark -1C boasts a 10D Nylon construction in the shell, lining, hood, and footbox for lightweight breathability and water resistance on every outdoor retreat. An 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. A 4°C comfort rating and -1°C lower limit also has it suitable for cold-weather camping.

A durable half-length #5 side zipper features a zip plow with two sliders – followed along the top by a down-filled draft tube – while the standard front collar draft helps to trap heat. A technical hood also offers a soft-touch adjustment, sitting deep for a warmer winter-camping experience. Plus, to minimise cold spots, vertical and horizontal chest baffles are present in both the lower-half and base, while box wall baffles exist at the top-half of the bag and run through the quilted construction of the lower-half.

For fast and light overnighters, keep as comfortable as your pack is compact with the Spark -1C Down Sleeping Bag by Sea to Summit.

• 4°C Comfort rating, -1°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 at top-half of bag and sewn throughout lower-half quilted construction
• Mummy Fit for maximum thermal efficiency and minimal bulk/weight
• Half-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
• 8L compression bag included