✈️Sleeping Bag Liner: Made of high quality fabric, soft and comfortable, much more skin friendly and breathable, can be used for a long time. It is small, compact and extremely light. Sleeping bag liner can be a terrific accessory for outdoor activities or traveling..✈️Humanized Design: The sleeping bag liner has an opening on the side for easy entry and exit. and then closes with a snap so you don't slip out of the sheet while you sleep. It has an invisible zipper on the bottom for easy ventilation. You can open the bottom zipper if you feel hot sleeping in travel sheets..✈️Best Companion For Sleeping Bags: The sleeping sack can be placed inside the winter sleeping bag. Just clean the lining instead of the sleeping bag. Keep warm in winter better. And the liner also can be used as summer sleeping bag. Suitable for 4 seasons..✈️Convinient & Functional : Sleeping bag liner is easy to clean.Just put it in the washing machine and wash it. Sleeping bag liner is convenient for your camping and some outdoors.Utimate design for our sleeping bag liner size helps to connect sleeping mats for single, family, couples, and group camping..✈️Various Usages: You can use it Indoors,outdoors,mountain climbing, camping,hiking,travel, hotel, hostels ,business trip, in-car night, sleeper train, flight, disaster, sudden overnight stay, etc. For your safe, turn into a clean and comfortable bed. It can also be used as an inner sheet in a sleeping bag.