Size: Single 9 * 25cm Health Benefit - There Are 68 Carefully Placed Tourmaline the Bottom of the Insoles, Correspond to Every Important Acupuncture Point on the Sole of the Human Foot, Improve Metabolism, Reduce Fatigue, Aid Sleep, And Improve Posture. Instant Relaxation - Acupressure Insoles Relieves Tension, Pain, And Long-Term Exhaustion Through Feet by Targeting the Natural Acupressure Points. Soothes and Relaxes the Feet and Rejuvenating the Entire Body. Widely Applicable: Magnetic Acupressure Reflexology Insole, Suitable for People Who Work Standing up All Day, Office Workers, Athletes, Seniors, Or Anyone Who Experiences Some Kind of Foot Pain. Material - Comfortable Soft Bottom Design, Skin-Friendly, Breathable. Acupressure Insoles with 250 Air Holes Provide Ventilation Better and Keep Your Feet Cool.