TRIWONDER Sleeping Bag Liner Cotton Camping Travel Sheet Sleep Sack Adult for Hostels Outdoor Picnic Planes Trains OPTIMAL COMFORT - 100% cotton. With a gentle touch, friendly to skin and comfortable to sleep. The pure cotton can absorb sweat effectively to service you a refreshing night. Withstand repeatedly washing, no fuzzing and static electricity CONVENIENT SHEET - Just insert a pillow or some clothes into the pillow cover to get a comfortable height and anti-dirty. Two straps at the sleeping sheet bottom for convenient fixing, or you can have a free style for yourself BREATHABLE - There is a zipper on the camping sheet foot posiston, off you a fresh airflow when opening and lock the warmth when closed. Soft sleeping bag liner with large space that let you turn over and over more freely FUNCTIONAL - The travel sheet with widen open for easy access, humanized hidden-interlocking mildly hold the edge down. There is a ripstop design in the seams, plus the exquisite stitching, more sturdy for the 2 person sleeping sack EXTENSIVE APPLICATION - The cotton sleep sack is cool in summer and warm in winter, active all the year. Sheet sack can be folded compactlyt, comes with a portable carrying bag, ideal for Business Trips, Traveling, Camping, Hotels, Mountaineering, etc Touch of tender feeling, friendly to skin Hygroscopicity  Quick drying  Breathable Not generate static electricity Anti-mite The sleep sheet adopts the high density twill process, there is no transparent feeling even if it is thin.