Color: White Size: One Size Structure: Envelope Filler: White down Outer fabric and lining: 400T15D tear resistant nylon Unit weight (packaged): 2 kg Available fill options: 300 g or 500 g down Overall product weight range: 500 g to 3000 g (depending on fill and model) Suitable for: Adults Key benefits Lightweight insulation: White down filling provides loft for good insulation while keeping the sleeping bag light and compressible. Effective thermal layer: Down clusters trap air between fibers to form an insulating layer that reduces heat loss and helps maintain internal warmth. Durable shell and lining: Both outer fabric and inner lining use 400T15D tear resistant nylon for abrasion resistance and longer service life. Simple, comfortable shape: Envelope structure offers room to move and quick packing without complex zippers or attachments. Multiple fill options: Choose 300 g or 500 g down fill to balance warmth and weight according to conditions and preferences. What makes this product stand out Consistent materials across shell and lining for reliable durability. White down fill that is light and insulating. Clear specification range so users can select the right weight and fill for their needs. Practical attributes Color and size: White, one size fits most adults. Fill and weights: 300 g or 500 g down fill; finished product weights vary from 500 g to 3000 g depending on model choice and additional construction. Construction: Envelope style for easy entry and simple packing. Typical use scenarios Backpacking and hiking: Use the 300 g fill option for lighter loads and faster mobility on multi day treks. Car camping and cool weather trips: Use the 500 g fill option when extra insulation is needed for evening and night temperatures. Travel and festivals: Envelope structure and compressible down make it convenient for overnight stays, hostels, or outdoor events. Notes Select the fill option that matches expected temperatures and comfort needs. The product is intended for adult use and designed for situations where a lightweight, insulating sleeping bag is required.