A more generous fit that’s both longer and wider, these bags afford greater comfort when used for longer periods of time but also enable additional clothing to be worn or stored inside the bag more easily.

Our time-tested EXL® system, a patented technology developed to provide extra warmth and extra loft. It adds no weight but minimises dead airspace around the body, reduces drafts, and pulls fabric away from the down allowing it to loft maximally.

For extreme conditions, GORE-TEX INFINIUM™ will protect against exposure to moisture thanks to its exceptionally breathable and multi-layer construction. With an incredibly light 10 denier outer face fabric and protective ePTFE membrane it weighs just 38g/m² yet will defend against snowfall, snow-melt and the effects of condensation; ensuring that down maintains its loft even in cold and damp conditions.

Gore-Tex Infinium ™ 10D is also used to line the foot-box and hood of the sleeping bag. This protects the bag from moisture which might build up from wet socks, feet, snowmelt and spindrift. It also increases resistance to condensation from breathing out moist air, and protects the bag from boot liners if they have to be stored inside the bag.

Ultrasoft™ 20 fabric is used in many of our bags to provide a lightweight, quick drying and exceptionally breathable fabric. With superfine yarns and a densely woven structure to create a lightweight and downproof lining fabric. Weighing just 36g/m² it offers exceptional tear and seam slippage strength for its weight.

V baffles offer exceptional down control and maximum heat retention by minimising thermal bridges and offering the greatest overlap of baffles. The 3-dimensional triangular structure gives excellent compression resistance, huge loft, and offers no direct paths through stripping from which heat can escape. V baffles also reduce the number of stitch-lines on the outside of a sleeping bag, resulting in greater protection from water and snow. Complex, uncompromising, and designed for the harshest conditions on earth, V baffles are the battle tank of baffle construction methods.

14:7 trapezoid baffles are a premium construction method for exceptional sleeping bags. They offer excellent overlap of baffles, reducing thermal bridges and the associated conductive heat loss. This means less down is required to keep you warm, especially under prolonged use. In trapezoid 14:7 baffles, side-walls form the ‘magic angle’ that maximises strength and stability to offer excellent down control and loft. Trapezoid baffles are lighter in weight than V baffles and offer excellent down control.

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.

Our Lode Lock™ collar closure with its low profile auto-locating closure combines all the advantages of a magnetic fastener with those of a mechanical lock. Rendering the traditional press-stud collar closure practically obsolete, its one handed quick release closure uses two captivated internal magnets to draw the locking mechanism together and ensure that once connected it cannot be accidentally opened. The result is an insulated collar that is more efficient and easier to operate. The collar’s down density is optimised so it moves with the user and contours to the body, while captive and elasticated drawcords ensure easy adjustment.

Our Gemini™ baffle is found throughout almost our entire line of sleeping bags. It is a unique zip baffle system which replaces the bulky, down hungry twin draft tubes used traditionally on cold weather bags. The Gemini™ system is light, efficient, low bulk and supremely protective. It is grown on to the sidewalls of the sleeping bag: the integrated zip baffle utilises a continuous V-baffle system paired with a shaped and stiffened underside. With a greater contact area than a traditional tubular set-up, heat loss by convection is significantly reduced and radiative heat loss minimised. Tested through every step of its development, it eliminates heat loss almost entirely and at a fraction of the weight and bulk of more traditional methods.

7 baffles provide exceptional down control for long-lasting performing and excellent insulation. Smaller than our previous headline hoods, the DC7 LV reduces weight, has less deformation when cinched down small, and offers single handed closure and easy-run dual tether draw cords for greater ease of use in extreme conditions.

A six baffle foot piece, our most advanced design, and featuring both our Bulls Eye™ Technology and offset Sharks Toe™ foot constructions. Its highly sophisticated baffle system maximises thermal efficiency for the coldest and most demanding environments, ensuring warm feet night after night.