Spark -18C/0F Beluga Black

Spark -18C/0F, from the brand Sea To Summit, is a sleeping bag perfect if you count every gram, but still expect to get a good night's sleep.

Filled with RDS-certified 850+ goose down treated with a PFC-free Ultra-Dry Down treatment, the Spark features a technical hood and a zip draft collar to retain heat. 

Comfort comes from an ultra-breathable 10-denier lining fabric, while a 10D shell with PFC-free DWR along with a highly water-repellent hood and footbox fabric protect against wind and condensation. 

The full-length zip model can be zipped together with an equivalent women's Spark for a comfort that couples can share.

• RDS-certified goose down, 850+ fill power, with PFC-free Ultra-Dry Down treatment for maximum thermal performance
• The ultralight 10D nylon lining and breathable 10D shell with PFC-free DWR keep the hood and footbox highly water-resistant
• Technical hood, anatomical footbox and ergonomic mummy shape: ultralight doesn't necessarily mean ultra-compromised
• YKK #5 zippers with zipper draft tube ensure reliable, snag-free operation
• Use-specific baffle construction