The Sea to Summit Women's Flame FmIII is minimalist in the true sense of the word, it only includes a few key features but delivers exceptional warmth given its very low weight.
Sea to Summit says:
Ultra-light and technical, our Flame Series bags are designed to keep you as warm as possible while minimising packed weight and size.
The Flame Series spans everything from an ultralight liner to an expedition weight mid-winter bag. While the end usage is very different, they reflect a design ethos of matching weather conditions to the lightest bag possible.
The secret to the impressive performance is a combination of premium materials and careful design. The RDS 850+ Loft premium goose down, light-gauge #3 YKK zip and high performance 10D Nylon shell and 7D lining fabrics, set the stage for a superior performance. These materials are combined with a contoured mummy design for efficient insulation, and that mummy design is then tweaked for each model to best fit the use scenario.
The women's specific fit is wider at the hip and narrower at the shoulder and we've added extra down overall for increased warmth.
Our Ultra-Dry Down water-repellent treatment protects the down from external moisture and condensation from the inside of the bag, virtually eliminating the negative effects moisture has on down. All Sea to Summit Down Sleeping Bags use Responsible Down Standard (RDS) certified down. The Ultra-Dry Down protection also makes the Flame an impressive hard-alpine or adventure racing bag, where every gram is counted and down has never been a viable option.
Sea to Summit's Womens Flame FmIII Down Sleeping Bag is a true minimalist bag that uses the lightest materials and highest quality, responsibly sourced down to deliver an exceptionally high warmth to weight ratio, when compared to other similarly rated bags.
The Flame III bag features vertical baffles on the chest area to minimise movement of down, optimising insulation where you need it most. The bag uses box wall construction throughout which reduces the cold spots you get with sewn construction. The full zip with 2 sliders allows good venting options if conditions are too warm. There is a small insulating zip baffle and further draft collars around the head to limit heat loss.
The contoured mummy shape is roomy and the super thin and light outer fabrics means more care will be needed than with more heavy duty bags. The bag compresses down to a very small size.
- Reviewed by Ultralight Outdoor Gear
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