1、THERAPEUTIC EFFECTS: Hot stones can be used to reduce muscle tension and pain. It helps to promote blood flow and it also reduces muscle spasms. 2、CHARACTERISTICS: This hot stone massage set is made of smooth round black basalt with high silica and iron content, which can keep warm for 25 to 35 minutes. 3、USE SCENARIO: These massage stones can be used in a spa salon or massage store, or at home. Easy to operate, safe and comfortable. 4、EASY TO OPERATE: Massage heating stone can be heated quickly without water, easy to operate, faster heating time of only 10 minutes to heat. 5、IDEAL FOR: Essential oil massage stones can reduce stress, muscle tension, soreness and stiffness, it is also ideal for athletes, home care and spas. Item Type: Massage Stones Product Material: Basalt Characteristics: no wax, no oil, original Applicable People: 1. People who face computer, TV and drive for a long time. 2. People who Easy to shoulder and neck, back pain, mental tension, stressful. 3. People who long term insomnia, neurasthenia, headaches, dizziness, hair lost and memory loss. 4. People with insufficient blood supply to the brain, lack of oxygen and shoulder and neck discomfort. 5. People with chronic constipation, diarrhea, and gastrointestinal discomfort. 6. People with poor blood flow, irregular periods and menstrual pain. 6 x Energy Stone 2.8 x 2.8in 6 x Energy Stone 1.8 x 1.8in 4 x Energy Stone 2.4 x 2.4in