Designed to: Help sitting feel good again, whether you are sitting all day for work, in the car or at home. Easy to use: Simply slip the cushion on any chair for instant, ergonomic positioning and posture correction. Cool and comfortable: Unlike other memory foam cushions which retain heat, this has a breathable mesh cover to allow for air flow. Ideal for: Premium shaped support for lower back pain, sciatica, disc pain, improved posture and more. Fit any chair: Designed to fit any chair with extra-long extendable straps to keep it secure. Back support: Enjoy stress-free sitting with a posture therapy lumbar back support chair cushion. Lumbar Back Support Chair Cushion | Living Social