sleeping Black warm even in extreme structure 1400g Lightweight Compact Top shell sleeping bag Winter sleeping bag Spring 3 400T20D nylon down Cold

✅️ [Thermography] In the "-25℃ extreme cold experiment", a temperature of 24℃ or higher was recorded after 1 hour. ✅️ [Space Technology] Space material airgel x aluminum. Our unique 4-layer down structure provides excellent heat retention. The 4-layer structure includes 400T 20D nylon fabric with airgel technology, 90% natural white duck down, and aluminum sheet to block out the cold outside air and keep your body heat in. ✅️ [Waterproof Ripstop Shell] The top shell fibers are made of high-strength 400T20D nylon. The new model is made of ripstop fabric, making the top shell more durable. Ripstop fabric is a high-strength fabric made of strong nylon woven into a grid pattern. This structure increases the strength of the fabric and makes it resistant to fraying and tearing. *Ripstop was originally developed to strengthen military uniforms and parachutes, and even if it were torn, it would be stopped by the lattice = rip (avoid), stop (stop), hence the name "ripstop". ✅️ [Lightweight/Compact] High quality white duck down has fine fibers and can be compressed 2 to 3 times more than artificial down. With the included compression bag, it can be compressed and carried compactly. A high-performance sleeping bag perfect for camping and outdoor activities. ✅️ [Suitable for 3 seasons] ●YKK zip fastener ●Draft tube ●Draw cord allows temperature adjustment in various areas. [Suitable for 3 seasons] From intermediate mountain climbing in the middle of winter to mountain climbing in spring and autumn (comfortable temperature: 0 to -10°C / limit temperature: -25°C) Super warm x waterproof x lightweight x compact ALUGEL sleeping bag for outdoor and camping uses its unique 4-layer structure to achieve excellent heat retention. Adopts spacesuit material airgel technology. The 4-layer structure of 400T20D nylon (ripstop shell processed) fabric, white duck down, and aluminum sheet blocks out the cold outside air and prevents body heat from escaping. It can be stored compactly and is lightweight, making it easy to carry. A high-performance sleeping bag perfect for camping and outdoor activities in the cold season.