Ergonomic design: This mattress cover is ergonomically designed to be comfortable and soft, providing strong support for the spine when placed on the floor, helping the body relax and decompress. Packaging note: The product is compressed during packaging, so after opening it may take a few days to to its normal thickness. Foldable and portable: Easily foldable for compact storage, making it ideal for bedrooms, hotels, dormitories, travel and entertainment venues. Multifunctional use: Can be used as a warm and fluffy mattress, a dormitory mattress, a tent mattress, a folding mattress, or a Japanese tatami mattress. It also serves as a pet mattress and can be used as a children's play mat, baby crawling mat, or even in the car. Practical scenarios: At home: use as an extra floor sleeping surface for guests or as a comfortable lounging mat in living rooms or playrooms. On the go: convenient for hotels, dormitories, or short trips where a portable, comfortable sleeping surface is needed. Travel and cars: suitable for camping in tents or for use as a floor mat in the car during long journeys.