Sofa Bed Large Filled Triangular Wedge Cushion Bed Backrest Positioning Support Pillow Reading Pillow Office Lumbar Pad with Removable Cover. Filled with High-quality PP cotton with good elasticity and durable. With removable cover easy to clean. Comfortable and healthy make you easy to Reading. Sufficient soft: Can absorb pressure of your upper body deeply When Reading reasonable support lumbar maintain comfortable state. Perfect curve: Can Be Used on Your Waist the perfect fit the waist effective to release of lumbar pressure. The density of science: It is Very Soft the contact site pressure value is lower than the blood pressure value cycle patency.