(No box, almost unused. With cover) Loosen your shoulder blades, and your shoulders will feel refreshed! Supervised by a shoulder blade specialist chiropractor. Reproduces the techniques of a chiropractor, It sways and applies pressure to your back, which you can't loosen yourself. 18 protrusions that apply pressure to the shoulder blades and the muscles around them, and a carefully designed curved shape that supports the back. Swaying from side to side, you can firmly loosen areas you can't reach with your own weight. The back side is perfect for relaxing, as it gently opens the chest and allows you to straighten your back. [Material] Polyurethane [Weight] 1120g [Country of Origin] China