Sea to Summit Spark -18°C Down Sleeping Bag is a top choice for alpinists, mountaineers and adventurers who do not compromise on the weight and volume of their backpack during winter expeditions, but at the same time require reliable warmth on cold nights. With an extremely low weight of only 1208 g and a packing volume of 9.9 L, it offers superior thermal insulation thanks to RDS-certified goose down 850+ Fill Power . The advanced hydrophobic treatment of the feathers Ultra-Dry Down and the water-repellent outer 10D nylon effectively protect against moisture, condensation and wind.

Main product advantages:

• Premium 850+ Fill Power Goose Down: RDS-certified feathers of the highest quality provide exceptional compressibility and the best thermal insulation to weight ratio.
• Ultra-Dry Down (PFAS-free) water-repellent protection: The environmentally friendly down treatment prevents moisture absorption and maintains insulating properties even in damp winter conditions.
• Eco-friendly outer protection: Durable 10D nylon with DWR treatment and a paper-light yet effective water-repellent panel on the hood and legs protect against dew and condensation inside the tent.
• Ergonomic mummy shape and anatomical leg area: The technically tailored profile fits snugly to the body, eliminating volatile air pockets and optimally retaining heat.
• Unobstructed entry with YKK #5 zipper: A high-quality full-length zipper allows for easy use and ventilation without snagging.
• Pairable with women's model: Designed to be paired with the women's version of the same series for comfortable sleeping for two.
• Intended use: Winter mountaineering, alpinism, touring expeditions and trail adventures in extremely cold conditions.