Color: Black Size options: 600g or 800g filling weight For: Adult Structure: Envelope Fabric: Nylon spinning outer shell Lining: Nylon Filler: Goose down or duck down Function: Fully unfoldable sleeping bag that opens flat to use as a quilt or sleeping pad Key benefits Versatile 2in1 design: Use as a traditional envelope sleeping bag or open it fully to serve as a quilt or sleeping pad for different sleeping preferences and situations. Reliable warmth and insulation: Filled with goose down or duck down for natural loft and thermal retention. Featherlike cotton structure enhances warmth while hollow cotton fibers contribute water resistance in the fill. Durable, weatherready shell and lining: Nylon spinning fabric and nylon lining resist abrasion and shed light moisture, supporting performance in harsh outdoor conditions. Adult sizing and simple structure: Envelope shape provides comfortable coverage and easy entry and exit, suited to most adults. Features and performance Two filling weight options: 600g for lighter warmth and easier packing, 800g for increased insulation when extra warmth is needed. Materials: Outer shell made from nylon spinning; inner lining nylon; choice of down filler delivers compressible loft and insulation. Convertible use: Fully unfoldable construction lets you use the product as a sleeping bag, a blanket, or a sleeping pad when joined with another pad. Practical design: Straightforward envelope structure that is easy to operate, store, and clean. Use scenarios Backpacking in cooler seasons: Choose the 600g option for a balance of warmth and packability on overnight hikes. Car camping or basecamp stays: Use the 800g option when higher insulation is needed and packing space is less constrained. Multiuse sleep setup: Open the sleeping bag flat to use as a quilt at a campsite, or lay it on a sleeping pad for added cushioning and insulation. Care and compatibility notes Designed for adult use and compatible with standard sleeping pads and camp beds when used as a pad or open quilt. Follow normal down care practices for washing and drying to preserve loft and performance. What sets this product apart A practical convertible design that eliminates the need for a separate quilt or pad. Combination of down filling and engineered featherlike cotton fill structure for improved warmth retention and partial water resistance without sacrificing compressibility. Durable nylon construction intended for repeated outdoor use.