SEA TO SUMMIT Women's FmIV Regular Frame (st81245)

This lightweight sleeping bag for women uses a Spark frame as its base. It has been redesigned to be narrower around the shoulders and wider around the waist to accommodate women's bodies, which tend to get cold more easily. It can be used as an ultralight liner, and its light weight makes it ideal for a wide range of winter expeditions. Even if the usage scenario is very different, it still reflects the design philosophy of being "lightest weight while adapting to the climate."
The Frame FmIV is a model designed for sub-zero temperatures. It's ideal for winter missions where you want to minimize your luggage. The entire jacket features a box baffle design to maximize down capacity and eliminate cold spots. This expedition-sized mummy-style jacket offers ample space. Vertical baffles above the torso prevent down migration. The half-length zipper features two sliders for excellent ventilation and ease of use.
Ultra Dry Down is treated with a water-repellent coating to virtually eliminate moisture, which can have a detrimental effect on down. It protects the down from moisture in the air and prevents condensation from forming inside. By using Ultra Dry Down, you can handle activities where every gram counts.

- Thin fabric that is lightweight and compact
Premium goose down with 850+ loft for maximum warmth.
- Mummy shape for comfortable and effective warmth
- Vertical baffles are placed above the torso to prevent down movement and eliminate cold spots.
- Draft tube reduces heat loss from the zipper
・Hood draft color
- Zippered pairing is not supported

Filling: 850+ fill power ultra-dry premium goose down
Weight: Regular 900g
Regular: Maximum 170cm
Down weight: Regular 650g

Storage size [regular]
Stuff Sack S (3.3-10 liters)
Compressed volume: 7.1 liters
Storage dimensions: 18 x 28 cm

Temperature range (EN13537) Comfort temperature: -10°C (Celsius)
Limit temperature: -17 degrees Celsius
Extreme Temperature: -38 degrees Celsius