This is a cushion for chairs, to be placed against your back. Please check it out if you are concerned about lower back pain or back pain. ◆Important Notes◆ This is a used item stored at home, so there may be small stains not visible in the images, as well as deterioration due to storage and aging. We are waiting for your purchase after you have carefully reviewed the photos and description and understood the condition. Please note that the colors may appear different depending on the monitor of your device. To prevent any problems, please refrain from purchasing if you do not understand used items, are overly sensitive, or are not responsible for your purchase.