Black * Superior Lumbar Support Provides Comfort Wherever You Sit * Lightweight And Portable * Enhances Overall Posture * Includes Soothing Massage * Use Together With Any Obusforme Backrest *  Use It At Home  In The Car Or At The Office * Item Measures 16 L X 10 W X 4 H * Uses 2  Aa  Batteries (not Included)