This is the RAKUNA shoulder blade release pillow. I am selling it because it didn't fit my shoulder width, even though I used it a few times after purchasing it. I believe it is in good condition, but please understand that it is a used item that has been stored at home and personally checked. Thank you for your understanding. The item arrived with the shipping label directly attached to the original box, so the box has some damage. I will ship it in the same packaging. Please be aware of this. Also, please note that there is a tear in the cardboard used to prevent the product from shifting (see photo 7). Supervised by a chiropractor specializing in shoulder blades. It reproduces the techniques of a chiropractor, swaying gently to apply pressure to the back, which you can't loosen yourself. It has 18 protrusions to apply pressure to the shoulder blades and the surrounding muscles, and a specially designed curved shape to support the back. It sways from side to side, allowing you to apply strong pressure with your body weight to areas you can't reach. The back side allows you to gently open your chest and stretch your back, which is also ideal for relaxation. *This product is not a medical device.