For the fast-paced pros braving the frosty climates – the Sea to Summit Spark Pro -1C Down Sleeping Bag offers lightweight and compact comfort!

Designed for efficiency on every overnighter, the Spark Pro’s Free Flow Zip System includes a full-length #5 side zipper and ¼-length #3 secondary zipper, each with a zip plow and two sliders, while the #3 footbox zipper with two sliders completes a unique arrangement that offers sufficient temperature regulation, versatility, and multiple bag configurations. An RDS certified 950+ 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 3°C comfort rating and -1°C lower limit also has it suitable for cold-weather camping.

Featuring a Mummy Fit for thermal efficiency and minimal weight on those wildlife wanders, the Spark Pro -1C boasts a 10D Nylon construction in the shell, lining, hood, and footbox for lightweight breathability and water resistance on every outdoor retreat. 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 the fast and light on the cold-weather hikes, keep as comfortable as your pack is compact with the Spark Pro -1C Down Sleeping Bag by Sea to Summit.

• 3°C Comfort rating, -1°C Lower Limit rating
• 10D Nylon shell and lining
• 10D Nylon waterproof, breathable hood and footbox
• Fitted front draft collar scalloped over neck and oversized at shoulders
• 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
• Full-length #5 primary zipper with zip plow and 2 x sliders
• Lightweight, 1/4 length secondary and footbox zippers for versatility and comfort.
• Free Flow Zip System for temperature regulation and numerous sleeping bag configurations
• RDS certified 950+ 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
• Compatible with separately available Sea to Summit Women's Spark bags
• 8L compression bag included