Ergonomic design: This mattress cover is designed to be comfortable and soft while providing strong support for the spine when used on the floor, helping your body relax and decompress. Important note on compression: The product is compressed during packaging, and it may take a few days after opening for it to to its normal thickness. Foldable and portable: Easily foldable for compact storage, making it an ideal choice for bedrooms, hotels, dormitories, travel, and events. Multifunctional mattress: Use as a warm and fluffy floor mattress; suitable as a dormitory mattress, tent mattress, folding mattress, or Japanese tatami mattress; also works as a pet mattress. It can be used as a children's play mat, baby crawling mat, or in the car. Practical use scenarios: At home: Use as a comfortable floor mattress in bedrooms or living areas to support the spine and provide a relaxing surface for rest. On the go: Bring for dorm rooms, hotels, or guest spaces where an extra bed is needed; folds up for easy storage and transport. Travel and activities: Use as a tent mattress for camping, a car mat for travel, or a play/crawling mat for children and pets during trips.