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Details & Specs
The Flame Fm4 from Sea to Summit is the streamlined, lightweight and high-performance sleeping bag designed for colder conditions.
This model has an expedition mummy bag size to give you extra space to move, and is narrower at the shoulders and wider at the hips for a women’s specific fit. The shell and lining are made from ultralight nylon to keep the packed size and weight down and is easy to access via the full zip with two sliders. This bag is filled with RDS certified 850+ Loft premium goose down that also has an ULTRA-DRY water-repellent treatment to protect it from condensation and external moisture.
The full box baffle construction reduces cold spots, while the vertical baffles on the chest prevent the down from moving around as you sleep. This bag provides a -10°C comfort rating and a -17°C lower limit, so it's suitable for use in hard alpine environments and colder climates.
To minimise heat loss, there’s a zipper draft tube, as well as a hood and front neck and backdraft collar. For maximum warmth on a lightweight expedition, the Flame Fm4 Sleeping Bag from Sea to Summit is the ultimate sleeping solution.
-10°C comfort rating, -17°C lower limit
Expedition mummy bag sizing provides extra space
RDS certified 850+ Loft premium goose down
ULTRA-DRY water repellent treatment on the down protects it from moisture
10D nylon shell and 7D lining for minimal weight and packed size
Light gauge #3 YKK ½ zip with two sliders for access and ventilation
Wider at the hip and narrower at the shoulder with extra down overall
Compression bag and storage cell
Full box baffle construction help reduce cold spots
Vertical baffles on the chest prevent the down moving
Zipper draft tube, hood and front neck and backdraft collar to minimise heat loss