Feature: 1. Improve Pain: Install the head on the muscle massager, can activates muscles, increases blood flow in the body, improve muscle pain and soreness. 2. Easy To Install: No need for adapters, directly plug in, bring you convenience. Necessary accessory for deep tissue massager, easy replacement. 3. Safe To Use: Exquisite workmanship, attention to details, soft to touch, delicate and mellow surface, will not scratch your skin, can be used with confidence. 4. Portable Design: Waterproof design, no need to worry about splashes, easy to clean. Small and light, easy to carry, suitable for home and massage shop. 5. Silicone Material: Muscle massager head is made of good silicone material, safe and eco friendly, skin friendly and wear resistant, durable for use. Specification: Item Type: Muscle Massager Head Material: Silicone Applicable Scene: Travel, outing, home. Package List: 1 x Muscle Massager Head Note: Please allow slight error due to manual measurement. Thanks for your understanding.