• polyester fiber
• --the is made of material, very on the skin,lightweight
• Liner sleep sack--the compact sleeping sheet is for hotel, camping, hiking, travel, plane, picnic, trains, etc,lightweight
• Easy to use and clean: simply use inside of your , the liner ensures you keep you and your keep clean,lightweight ,hotel
• Lightweight and compact: your liner is compact and light enough to throw in any camping or survival bag,hotel ,lightweight
• Versatile usage: for camping trip train travel outdoors, the solution to your travel troubles and it can be useful anywhere you might not want to trust the bedding,