Soft and Breathable: Crafted from high-density, durable memory foam, the back cushion offers excellent support and enduring comfort. The 4D air-cooled mesh covering the lumbar pillow enhances breathability, ensuring your back stays cool and well-ventilated. Pain Relief: The Kasney memory foam lumbar pillow is thoughtfully designed to bridge the gap between your back and the chair or bed. Its responsive memory foam contours to the natural curve of your lumbar spine, delivering cushioning, support, and comfort for your lower back, whether you're seated or reclining. Multifunctional Lumbar Pillow: This lumbar pillow is your go-to solution for comfort anytime, anywhere. It provides ample back support and enhances the sitting experience for office workers, long-term bed-bound individuals, and long-distance drivers, helping to alleviate back pain. It's ideal for use on beds, office chairs, car seats, sofas, wheelchairs, recliners, and various other seating options. Easy to Wash: For cleanliness, the Kasney lumbar support pillow includes an invisible zipper, allowing you to easily remove the pillow insert from the cover for washing. Keep in mind that memory foam inserts should not be washed; simply let them air out. Warm Tip: To achieve optimal appearance and support, please unpack the pillow and allow it to sit for 24 hours before use. Be aware that the memory foam may exhibit varying firmness levels depending on the temperature; it tends to be firmer in cooler conditions and softer in warmer ones. This is completely normal and does not impact its functionality.