Lumbar Pillows materials and durable construction: The bed wedge pillow is stuffed with density polyurethane foam to maintain shape over time and resist deformation. The back support pillow uses a soft, durable linen blend fabric that feels comfortable and resists pilling. Ergonomic wedge design: The wedge shape aligns with the natural curvature of the spine, providing comfortable support whether you are seated or lying down and helping reduce back fatigue. Thoughtful design details: A long metal zipper at the bottom of the headboard backrest allows easy access to add or remove pillow filler. The headboard cover includes a pocket to hold your phone, remote control, and other small items. Easy care and maintenance: The triangular reading pillow cover is removable and washable; unzip and unbutton the cover to clean. Practical use scenarios: Reading or watching TV in bed: Use the wedge to support your back while sitting up comfortably. Working from bed: Use as a backrest to maintain proper posture while using a laptop. Resting or sleeping with lumbar support: Use the wedge to support the lower back and reduce pressure. Size and fit notes: The backrest is large to provide substantial support, contributing to a stable, allday comfortable experience. The materials and design focus on durability, softness, and longterm performance.