Targeted pressure relief for sciatica & tailbone: Find comfort from discomfort! This pressure relief seat cushion is contoured to reduce stress on your coccyx and sciatic nerve. The raised bolsters provide superior support to your hips and lower back, making it an ideal sciatica pain relief pillow and tailbone pain relief cushion for long hours of sitting at work or home. Extra large & thick for maximum support: Experience the difference premium quality makes. Measuring 19.55 x 15.68 x 4.96 inches, our oversized seat cushions for office chairs are thicker and wider than standard options, offering full coverage and preventing bottoming out (Please measure your chair before purchase).It's one of the most supportive chair cushions for users seeking lasting comfort and proper posture alignment. Non-slip grip & versatile use anywhere: Stay securely in place! The built-in non-slip bottom ensures this seat cushion for car, office, or home stays put whenever you move. It's the per