1This product is 100% silica gel, nontoxic, harmless, nonallergic and nonirritating to the human body. 2The silicone material is super soft and can relieve the discomfort symptoms of diabetics. 3Embossed design, taking into account different symptoms of foot, acupoint massage, supporting arch position and heel pain. 4Provides super shock absorption, excellent cushioning and lasting comfort, avoiding foot pain and fatigue. 5It can effectively improve the symptoms of spine disease caused by Achilles tendinopathy, knee pain, low back pain and foot pain.