
For those wanting to survive and thrive in extreme conditions
Engineered to withstand extreme cold in the most hostile environments on earth.
With durably rain-resistant fabrics and construction optimised to maximise and maintain warmth for extended periods these bags are built specifically for the needs of explorers and mountaineers undertaking the most committing journeys in the highest, coldest and most remote locations.
Extreme Expedition Range Features
Fill
Trace your Down
Fit
The fit of a sleeping bag is crucial in optimising performance.
A well-fitting sleeping bag is not only highly comfortable it also reduces dead air space and maximises thermal efficiency.
Fabric
Baffles, Zip Baffles and Collars
Our neck baffles and entry-zip baffles are vital in reducing the ‘chimney effect’ of hot air flowing out of the sleeping bag’s openings, and are also useful in reducing the ‘bellows effect’ of the movement of a restless sleeper pumping warm air from the bag.
V Side Baffles provide additional down control to the sides of a sleeping bag and are used in conjunction with our ground level side-seam construction. Their 3 dimensional structure running the whole length of the bag improves loft and plays a significant role in managing thermal resistance over a greater surface area of the bag.
Hood and Foot Piece
The head loses a lot of heat and is very sensitive to changes in temperature, making good hood design crucial to the performance of any sleeping bag. A good hood will also keep the neck warm and reduce the ‘chimney effect’ of hot air escaping the body of the sleeping bag.
Cold feet can spell the end of a comfortable night’s sleep or even the end of an expedition and we have unrivalled experience in designing innovative sleeping bag foot pieces. By controlling the down in a sleeping bag, the foot is kept warmer, and ensuring the foot piece fits perfectly around the lower body is crucial.