I purchased this in March of this year to help with stiff shoulders, but I've only used it a few times and haven't used it recently, so I'm selling it. Uses: Shoulders Material: Polyurethane Item Weight: 1120 grams Brand: RAKUNA Features: Portable Product Dimensions: 40 cm length x 27 cm width x 110 cm height Relieve stiff shoulders by loosening the shoulder blades! Supervised by a chiropractor specializing in shoulder blades. Replicates the techniques of a chiropractor, swaying gently to apply pressure to the back and shoulder blades, areas you can't reach yourself. Features 18 protrusions to apply pressure to the shoulder blades and surrounding muscles, and a specially designed curved shape to support the back. Sways from side to side, allowing you to firmly loosen even the hard-to-reach shoulder blades by applying your weight. This massage item is designed based on ergonomics to enhance relaxation.