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Sea to Summit Women’s Flame FMIV Down Sleeping Bag


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Sea To Summit’s new ultralight Flame Series of sleeping bags are specifically designed for women. Wider at the hip and narrower at the shoulder and designed to keep you as warm as possible while minimising packed weight and size.

Engineered for women to provide extra warmth where needed, Flame series sleeping bags are what you reach for when you need a high performance sleeping bag but don’t want to be weighed down by one.

The Flame FMIV combines more overall ULTRA-DRY Down 850+ loft premium goose down, a light-gauge #3 YKK zip, high-performance 10D nylon shell and 7D lining fabrics and a contoured mummy shape for efficient insulation and superior performance.

  • Comfort: -10°C
  • Lower limit: -17°C
  • Extreme: -38°C

Weight: Regular 890g / Long 995g



  • Contoured mummy shape designed for women’s comfort and efficient insulation
  • Regular and long length size options provide extra room for both shoulders and hips while still maintaining insulation efficiency
  • Responsible Down Standard 850+ Loft Premium Goose ULTRA-DRY Down™ for maximum insulation value
  • Ultralight 7D and 10D fabrics for minimal weight and packed size
  • Vertical chest baffles prevent down migration and cold spots
  • Sewn through box baffle construction to minimise weight and hold down in position
  • Half zip with two sliders aids access and allows ventilation from mid-section of bag
  • Draft tube prevents heat loss through the zip
  • Includes hood draft collar
  • Ultra-Sil™ Nano Compression Bag for compact storage included
  • Note that this bag is not designed to pair with another
Fits to 170cm (Regular), 183cm (Long)
Shoulder Width 75cm (Regular), 77.5cm (Long)
Foot Width 45cm (Regular), 48cm (Long)
Rolled Size ⌀18 x 40cm
Compression 7.1 litres, 10 to 3.3 litres sack volume (Regular)
7.9 litres, 10 to 3.3 litres sack volume
Fill ULTRA-DRY Down™ 850+ Loft premium Goose Down (min. 90% down)
Fill Weight 650g (Regular), 730g (Long)
Average Weight 890g (Regular), 995g (Long)
Outer Material 10D nylon
Inner Material 7D nylon

Additional information


Regular, Long


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