Fengzel Outdoor sleeping bag cm 3D quilt goose down 850FP filling Connectable Minimum operating temperature Lightweight Compact Large size Extreme

[Mummy type with excellent cold protection and comfort] A 210*80 (50) cm mummy type sleeping bag filled with 400-2000g down that fits well with your body and has high heat retention ability, and can be used in all seasons. The wide trapezoidal foot box design allows both feet to fit comfortably without feeling cramped. [Filled with high quality 95% goose down] Geese, which are free-ranged for long periods in down production areas with great natural environments with large temperature differences, are larger than ducks and can collect larger, higher-quality down balls. The dense radial barbs allow plenty of warm air to be taken in, resulting in 95% high-purity goose down. It has better heat retention, bulkiness, and elasticity than duck down, and enjoys a warm sleeping experience and a gentle touch.It is used as a rare feather for luxury sleeping bags, futons, etc. [Three-dimensional box quilt structure] We use a quilt sewing specification that creates a three-dimensional box structure between the front and back sides of the sleeping bag, and the down in each square traps a three-dimensional air layer to prevent cold air from entering from the outside and maximize heat retention performance! The box structure gives it height, so the feathers have excellent bulk. In addition, this will prevent the down balloons from moving and shifting in each square. It also has the benefits of being easy to fit your body, convenient to wash, and compact storage. [High-performance fabric] The front and back of the sleeping bag are made of durable 400T nylon and 20D nylon, which are waterproof, windproof, and breathable, which not only prevents the down from blowing out, but also blocks the warm air of the filling from moisture such as condensation and rain. It has great breathability and comfort, making it very comfortable to use. Additionally, the material itself is highly durable, light and soft, has high frictional strength, and is easy to remove dirt. [Warm three-dimensional hood] The hood has an adjustable drawcord, so on nights when it feels cold, you can tighten the laces to prevent cold wind from entering through the gaps, increasing heat retention.