Two-in-one coccyx cushion and lumbar support: This memory foam seat cushion and lumbar support set provides support for your hip and tailbone, promotes good posture, and helps maintain the natural curve of the spine. Note: This is a cushion kit, not a medical device. L-shaped ergonomic design: Engineered for comfort and support, this cushion minimizes fatigue and discomfort while promoting healthy posture. Ideal for those needing more than just a cushion, it offers superior back support and tailbone relief. Convenient to use: Features an invisible backside zipper for easy removal and washing. The O-shaped cutout in the seat cushion suspends the coccyx above hard surfaces, relieving pressure in this sensitive area. Premium memory foam: Made from 100% pure premium quality memory foam, this cushion set improves posture and relieves leg pain during long periods of sitting or driving, maintaining comfort and density. Applications: - Office chair or computer desk setup for all-day comfort and posture support. - Long drives or commuting to reduce tailbone pressure. - Studying, gaming, or relaxing at home during extended sitting sessions.