Feature 1.Each stone goes through a proprietary treatment process to give you clean, smooth and fully-usable stones. 2.The stones are used for hot stone massage therapy. 3.Help to promote muscle relaxation, improve blood circulation. 4.Apply to face and hand joints, for palm, foot, ankle joints and other parts of meridian. 5.Eliminate superfluous toxin, can enhance the immunity ability of the person in an all-round way.Features: 1. Each stone goes through a proprietary treatment process to give you clean, smooth and fully-usable stones. 2. The stones are used for hot stone massage therapy. 3. Help to promote muscle relaxation, improve blood circulation. 4. Apply to face and hand joints, for palm, foot, ankle joints and other parts of meridian. 5. Eliminate superfluous toxin, can enhance the immunity ability of the person in an all-round way. Suitable people: 1. People who often play mahjong or drive cars, in front of computer or TV for a long time. 2. People who easy to get pain on shoulder, neck and back, mental tension, high pressure. 3. People who has long-term insomnia, neurasthenia, headache, dizziness, hair loss and memory loss. 4. People who insufficient blood supply to the brain, lack of oxygen, and people with shoulder and neck strain and hyperplasia. 5. People who has chronic constipation, diarrhea and gastrointestinal discomfort. 6. People who has menstrual period dysregulation, dysmenorrhea.Specification:Material: Basalt Color: As Pictures Shown Size: 3*4*0.8cm/1.2*1.6*0.3in Package List:12 * Massage Stone Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store