1、Suitable for professional use or household use. 2、The massage and hot application of corresponding acupoints can relieve headache, shoulder pain, neck pain, knee pain. 3、It can moisturize the skin, restrain the pores and tighten the skin. 4、With essential oil, it can relax nerves, relieve stress and improve sleep quality. 5、It can moisturize the skin and ease the mental stress, through the massage and hot compress, it can strengthen the bleed circulation in the body, and accelerate the body metabolism. Hot stone massage is a unique variant of massage therapy that employs heated stones to release physical tension and calm the nervous system. Features: 1. It can moisturize the skin and ease the mental stress, through the massage and hot compress, it can strengthen the bleed circulation in the body, and accelerate the body metabolism. 2. With essential oil, it can relax nerves, relieve stress and improve sleep quality. 3. It can moisturize the skin, restrain the pores and tighten the skin. 4. The massage and hot application of corresponding acupoints can relieve headache, shoulder pain, neck pain, knee pain. 5. Suitable for professional use or household use. Specification: Item Type: Massage Stone Material: Stone Quantity: 16Pcs/Box Type Quantity Size(cm / inch) Suitable for Circle 4 8 x 8 x 1.8 / 3.1 x 3.1 x 0.7 back, waist and thigh Oval 4 8 x 6 x 1.8 / 3.1 x 2.4 x 0.7 arm, thigh, calf Small Oval 8 4 x 3 x 0.8 / 1.6 x 1.2 x 0.3 face, eye, ankles Color: Black Weight: Approx.1910g Package List: 1 x Bag of 16Pcs Massage Stones How to Use: 1. Pour into the warm water to heat. 2. Do not directly contact the massage stone to avoid scald. 3. Must use the insulation glove,bails out the massage stone from the heater,put in a dry towel, cooling to the temperature your need. 4. Bone and joint must reduce dynamics,and gently slid then. Adapt to the crowd: 1. People who have been facing computers and TV for a long time, playing mahjong and driving frequently 2. People who are prone to shoulder and neck, back pain, nervousness, and stress 3. People with long-term insomnia, neurasthenia, headache, dizziness, hair loss and memory loss 4. People with insufficient blood supply to the brain, hypoxia, strain and hyperplasia of the shoulder and neck 5. People with long-term constipation, diarrhea, and gastrointestinal discomfort 6. People with irregular qi and blood, irregular menstruation, dysmenorrhea, etc.