Product description Specifications: According to the human body mechanics, the product has a large number of circular massage columns. Built-in vibration starter which has massage function, leaning against it is conducive to human blood circulation.. Using the most advanced physiotherapy design to correct back sitting position, while relax your waist for sitting a long time. Can be connected to the car cigarette lighter 12V DC power, the vibration velocity of lumbar can be freely adjusted, with drive-by-wire switch. The product is equipped with elastic band, it can be directly set on the seat, easy to use. Functions: To improve blood circulation, speed up metabolism Built-in far-infrared heating element to warm physical body. To dredge venation and alleviate muscle pain . Type: Electric Massage Cushion Quantity: 1 Pc Material: Micro Fiber + Memory Foam Features: Fold Resistant, Elongation Moderate, Back Massager, Durable Box Size: 33cm x 31cm x 10cm/12.99" x 12.20" x 3.94" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Included: 1 x Electric Massage Cushion Directions 1. Connect the Electric Massage Cushion to the car cigarette lighter 12V DC power. 2. Adjust the vibration velocity of the lumbar as desired. 3. Place the cushion on the seat using the elastic band. 4. Lean against the cushion to benefit from the massage function and improved blood circulation.