This is single fabric layer, NOT outdoor sleep bag which has fill in. Yes, it can be used as inner layer of sleep bag to enhance warm and protect sleep bag. ——— Mostly used in question environment, hotel or sleep over as guest.——- We made by most dense, think satin materiel, search amazon to read customer review to tell how our quality is. keyword: “octorose silky satin”
- Spacy large size made from High Quality Silky Satin Material
- Big Pillow pocket , long side zipper, overlay on top
- Carry bag, easy folding and organize
- Hand or Machine wash with cold water
- Why us: A. super strong, material, B. large size.