Flame FmIII 25F - Women's

$508.95 - $528.95
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Ultralight, super-compact bag with premium 850+ Ultra-Dry Down

The Flame FmIII is a women's 25-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.


Brand Name:
Sea to Summit
Temp Rating:
25° F
Seasonal Usage:
Three Season
Temp Rating Celsius:
-4° C
Bag Style:
Fill Weight:
Regular: 15.5 oz / 440 g
Long: 17.5 oz / 495 g
Gray / Orange
Ultra-Dry Down 850+ Loft; RDS-certified
Regular: 1 lb 7.5 oz / 665 g
Long: 1 lb 10.3 oz / 745 g
Bag Length:
Regular: fits users up to 5 ft 7 in / 170 cm
Long: fits users up to 5 ft 10 in / 179 cm
Circumference at Chest:
Regular: 59 in / 150 cm
Long: 61 in / 155 cm
Circumference at Hips:
Regular: 56 in / 142 cm
Long: 58 in / 148 cm
Circumference at Foot:
Regular: 35.5 in / 90 cm
Long: 38 in / 96 cm
Bag Shell Material:
10D Nylon
Bag Lining Material:
7D Nylon
Bag Stuff Size:
5.3 L volume when compressed
Other Features:
• ULTRA-DRY Down 850+ Loft 90% Down Cluster Premium Duck Down certified Responsible Down Standard (RDS)
• 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 neck draft collar 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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