The Additional Air Lumbar Support Bladder is designed for the MSA 4X4 Canvas and Sheepskin Air Lumbar Support Systems, featuring easy installation and Velcro strips for secure placement. With an adjustable hand pump, you can customize the inflation level for optimal comfort. While it effectively relieves lower back pain during your journeys, remember to take breaks to stretch and walk around. Enjoy a more comfortable ride with this simple and cost-effective solution!