Good things come in small packages. This powerful little Knot Buster® massage tool is designed to fit perfectly into the palm of the hand. Saves your hands and fingers from fatigue. Massage therapists actually love using this tool for chair massages because for the person getting the massage, it feels like someone's applying deep pressure with their elbow. Portable, easy-to-pack size— Knotty Tiger can go anywhere! Three trigger point curves to apply differing amounts of pressure. Non-slip grip feature. Hard, firm and smooth surface glides over clothing.