Lumbar Support Back Cushion, Travel Size (Grey) Pulse Industries Lumbar Support Back Cushion Improve comfort while driving and sitting - Provides lower back support Convenient portable size - easy to take with you on trips, keep in your car or desk drawer, so many places to use for extra comfort! Measures: 11.75 x 8 x 2 inches (at widest point) Help ease the back pain that comes from sitting in car seats or chairs with inadequate lumbar support.