Ergonomically shaped memory foam cushion supports spinal alignment when placed under knees during back, easing lumbar tension and reducing lower back discomfort For side sleep positions Made with premium dense memory foam that conforms to your form for tailored while retaining its structure Features a simple to remove machine washable cover for easy cleaning and hygiene Quick to detach and wash Promotes relaxation by gently cushioning joints and enhancing blood flows Designed to maintain proper body alignment throughout the night, helping you wake up feeling rested without stiffness or discomfort Multi functional design serves as leg pillow, back cushion or head rest Perfect for home, work or travel use