"New, slightly damaged item ★ Box has scratches/stains, but the contents are new." "Product Condition" "Product Information (for new items)" "Main Specifications" [Relief from Back Pain] MyeFoam's high-resilience mattress features excellent resilience (180N high-resilience), preventing the lower back from sinking. It supports the lower back from below, maintaining a comfortable sleeping posture. The firm, resilient feel supports the body firmly, making it easy to turn over and reducing pressure on the lower back during sleep. With its moderate firmness and excellent resilience, it's also recommended for those who have had trouble sleeping on previous mattresses due to their back or lower back sinking in. Thanks to everyone, this product has won the [Amazon Real 5-Star Product] award. It has also been featured in a magazine published by Diapress. [Carefully Selected Materials, Washable Cover] The original cover has a gentle feel and is antibacterial, anti-mite, and odor-resistant. Furthermore, it comes with an inner cover to prevent deterioration of the main body and ensure cleanliness. The back of the cover has a non-slip specification that prevents slipping on flooring, so you can use it with peace of mind. The outer cover can be easily removed and washed with a zipper, allowing you to keep it clean at all times. [Compact Storage, Convenient to Carry] Comes with a dedicated storage bag. It can be rolled up and stored compactly, so it doesn't take up space when not in use. It's easy for women to carry. Regarding the thickness of the mattress, customers can choose according to their preference. To meet the needs of our customers, we offer mattresses with different thicknesses of 3cm/5cm. [About Mattress Creases] The mattress is rolled up and packaged, so please be sure to open it after the product arrives. After opening, please leave it flat without using it until it returns to its original thickness and size. Initially, it may not be thick enough and may have creases, but after leaving it for 2-3 days, the creases will disappear and it will return to its original size. Depending on the usage environment (a low-temperature environment), it may take 5 days to a week. *Please be sure to open the product within one week of arrival. B09RJDYBZR