Sleeping Bags

As the name suggests, these are our lightest models. We have over 12 models weighing less than 2 lbs (under 900 grams) and several models that weigh less than 1 lb (under 450 grams). These bags feature outer shell fabrics in high density nylon rip stops (7 denier to 12 denier) and the lining material is a nylon taffeta (10 denier to 15 denier) all woven with super high density and nearly square construction specifically for Western Mountaineering.

Our Microlite XP Microfiber shell fabric strikes the perfect balance of breathability, water resistance, and durability for outstanding performance throughout a broad range of temperatures and conditions. The high density of filaments in each yarn plus the balanced weave of more than 400 threads make it the most breathable of our sleeping bag shell fabrics while providing excellent water repellency that will be effective for decades. Only slightly heavier than our Extremlite Series fabrics, this 20 denier polyester rip stop microfiber is still very lightweight and will be down proof for decades.

For the most extreme conditions, we offer a wide range of models with Gore Windstopper shell fabric. This is the most breathable of the laminated fabrics we have tested and the performance of this lightweight two layer material stands above the competition in terms of water resistance, weight, breathability and longevity. Gore has been perfecting their waterproof breathable technology for over forty years and their lightest laminated fabrics keep the insulation dry by providing a breathable barrier against wind and water. All of our Expedition Series bags feature Gore Windstopper shell fabrics to keep the insulation dry even in the most extreme cold or wet conditions.