Classic Sleeping Bags

Our Classic Bags use GRS-certified recycled down with a minimum content of 700 fill power.

Learn more about our Down Cycle project.

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.

The Classic bags use our GT fit, which is a little more spacious than our Alpine fit, while remaining thermally efficient. This can give you a bit more space on longer trips, and at times when not every gram counts.

Fabric technology is advancing all the time, and we continually seek out those fabrics that offer the lowest weight, maximum breathability, compressibility and comfort.

The 50D ripstop outer shell fabric and 20D plain weave lining fabric on the Classic bags are lightweight and downproof with a DWR finish.

Baffle structure is crucial to the performance of down sleeping bags. Without it, even the best quality down will not loft and insulate to its full potential. Baffles affect a sleeping bag’s durability, weight, and the migration of down inside them – they are the building blocks from which sleeping bags are made.

Slanted box wall baffle

A slanted box wall baffle takes the classic box wall and offsets it to reduce thermal bridges and increase thermal efficiency. It also offers improved down migration control. An excellent lightweight construction technique.

Lode Lock™ collar closure

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 captive 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.

Gemini™ zip baffle

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 onto 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 is 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.

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.

DC5 Hood

A 5-baffle hood that provides high levels of down control, low weight and excellent insulation. Its roominess imparts excellent versatility and, combined with the easy-run dual tether draw cords, superb comfort.

2 baffle anatomically shaped and offset foot piece

A 2-baffle foot piece baffle construction restricts down migration whilst keeping weight and bulk to a minimum.