Sea to Summit Flame FmIII -4°c Sleeping Bag

Ultra-light and technical, the Sea to Summit Flame Fmlll -4°c Sleeping Bag is designed to keep you as warm as possible while minimizing 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 a thought-out 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 superior performance. These materials are combined with a contoured mummy design for efficient insulation and tweaked for each model to best fit each climate. 

The women's specific fit is wider at the hip and narrower at the shoulder. Also adding extra down overall for increased warmth. 

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 the down. All Sea to Summit Down Sleeping Bags uses 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. 

Ultra-light and technical, the Flame™ Series bags are designed to keep you as warm as possible while minimizing packed weight and size. 

Features

• Uses a full box baffle construction to accommodate extra down and reduce cold spots
• Expedition mummy bag sizing provides extra space for layered clothing or extra wriggle room
• Vertical baffles on the chest optimize positions easy access and extra ventilation options
• Zipper draft tube, hood, and front neck draft collar to prevent warmth being lost when it's needed
• NOTE: This bag is not designed to couple with another