- Unique ergonomic design with an arch-aligned support and a massage surface for the lower back. It helps correct posture and provides comfort across different parts of the body, reducing fatigue and promoting relaxation. - Premium memory foam: 100% high-density memory foam that is soft yet supportive and resistant to flattening over time. Delivers long-lasting comfort and a good balance of support and plush feel. - Relieve back pain with adjustable fit: insert buckle design and wider fixed belt accommodate different waist sizes. By moving the height to align with your pain point, it fills the waist gap and matches the waist curve for targeted support. - Breathable, removable, washable cover: 4D mesh zip pillowcase made of skin-friendly polyester. Breathable and comfortable, machine washable for easy cleaning. Note: memory foam should not be washed. - Compatibility and use scenarios: suitable for car seats, office chairs, and home seating. Use during long drives to ease lumbar discomfort, at a desk to support posture and reduce fatigue, or at home for relaxation and travel.