Features 1. High quality cotton core: filled with medical grade cotton material, it maintains a long-lasting support shape, never collapses, says goodbye to tossing and turning, and achieves a perfect balance between support and comfort. 2. Ultra soft surface: The fabric is as soft as silk, helping you fall asleep. The outer cover is machine washable, easy to clean, and has a durable surface that combines breathability and moisture wicking properties. 3. Perfect size: Suitable for various sleeping positions, avoiding the trouble of turning over. Multi layer thickness design provides comprehensive support for the back, with no dead corners to effectively relieve nighttime pressure, prevent lumbar muscle strain, and reduce lumbar burden. 4. Multi functional design: This pillow not only protects the waist, but can also be placed under the calf or knee to provide comfortable support. It has the functions of a knee pillow, waist pillow, and leg spacing pad, especially suitable for supine, low back pain, and pregnant women. 5. Ergonomic design: The waist pillow that conforms to ergonomics perfectly fits the curve of the waist, providing maximum support at night, effectively relieving hip, sciatica, and back pain, and maintaining perfect alignment of the legs, hips, and spine during sleep. Specifications: Product Name: Car Yuanbao Waist Pillow Headrest Waist Pillow Product Fabric: 4D Grid Product Core: Slow Rebound Memory Cotton Product size: Headrest -30 * 33 * 18 * 14, lumbar support -48 * 32 * 24 * 13cm Package Include: 1 * Waist pillow