Back Cushion,Lumbar Support Cushion Pillow,Memory Foam Car CushionIt sounds like you're looking for a back cushion or lumbar support cushion made from 100% memory foam, likely for use in a car. These cushions are designed to provide comfort and support for your lower back while seated, which can be especially beneficial during long drives or if you have lower back pain. Memory foam is known for its ability to conform to the shape of your body, offering personalized support and helping to maintain proper posture.