YupbizAuto Office Chair Car Seat 2 Motor Multi Vibration Mode Mesh Massage Lumbar Cushion Ergonomically designed and built for lower back support, promoting better posture Features 2 built-in motor which massages the lower back muscles. Helps to relieves stress, back aches and pains 4 massage modes for maximum comfort, Includes 2 power adapters for home and car Mesh foam design for best air circulation and comfort. Secure strapping system holds cushion tight to most vehicle seats and office chairs 100% satisfaction guarantee or your money back.