Ultralight, super-compact bag with premium 850+ Ultra-Dry Down
The Flame FmIV is a women’s 15-degree fast-and-light sleeping bag. This bag uses premium ULTRA-DRY Down 850+ and intelligent, no-frills design to provide cutting-edge performance for ultralight backpacking.
This women’s specific fit is narrower at the shoulder and wider at the hip, and features extra down compared to the unisex Spark models.
• 10D shell and 7D liner materials help to achieve the incredible lightweight and compact packed size
• Uses a full box baffle construction to accommodate extra down and reduce cold spots
• Expedition mummy sizing provides extra space for layered clothing or extra wiggle room
• Vertical baffles on chest optimize position of down to prevent it from moving during use
• Full side zip with two sliders provides easy access and extra ventilation options
• Zipper draft tube and front and back neck draft collars prevent heat loss
• Includes lightweight Ultra-Sil™ compression bag and storage cell
• Please note that this sleeping bag is not designed to be coupled to another bag
Women’s Fit:
• Down chambers filled using body-mapping to maximize warmth for a woman’s physiology
• A wider shape between hips and knees to allow you to sleep in a natural position without compressing the down insulation and creating cold spots.
• Shorter overall length and narrower girth in shoulders to reduce dead space and increase thermal efficiency



























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