The Defence 4 is the most popular and best-selling all-round sleeping bag with excellent weight to stuff size and performance ratio. It is a well-established, treeseason sleeping bag that has proven to be 100 % reliable on cold nights both in the wilderness and in snow caves. A protection flap on the outer side of the ziper keeps out wind and wetness. The outer shell is a super-light, highly resistant, microfibre nylon with a fine microporous coating which makes it waterproof. There is a generous draft tube on the inside of the zipper to prevent heat loss at the zipper.
Differential Cut Even when the sleeper moves about compressing the inner layer of insulation, the sleeping bag’s warmth is retained. Successive insulating layers are cut more generously. This ensures the greatest loft in all areas and in every position. Additional air cushions form between the various layers. Movement inside the sleeping bag creates pressure points, but with our differential cut only the innermost layer is compressed. The outer layers retain their loft and therefore their insulating properties.
G-Loft Warm, light and breathable - even in extremely wet and cold weather: The revolutionary G-LOFT insulation meets the highest standards and combines the benefits of natural down with the ruggedness of a synthetic fibre. And it is permanent. Due to the ”MEMORY EFFECT” the fibres automatically return to their original and unique form, providing warmth, even after repeated washing and hard use. G-LOFT guarantees optimal thermal insulation and heat regulation, both indoors and outdoors.
Thermoflect Thermoflect increases the heat retention of a sleeping bag by around 11 %. Thermoflect is our solution to heat loss due to body radiation. Thermoflect is an ultra-light, ultra-soft, breathable scrim with the unique ability to reflect body-heat.
The Trapezoidal Foot Section Experience has shown that the trapezoidal cut provides the ultimate foot space. In a normal sleeping position, the feet do not poke the insulation outward, avoiding cold spots. There is also enough room to store a shoe bag or extra clothing.
Internal zipper cover filled with insulation material to prevent zip from freezing
Anti-trap strap ensures the clamp-free opening and closing of the zip