Targeted pain relief and ergonomic support - The ergonomic contour with a firm memory foam donut shape provides focused support to reduce pressure on the coccyx and lower back, helping ease symptoms of sciatica, hemorrhoids, and coccyx pain while encouraging proper posture and promoting healing. Strong, portable, and versatile - Sized at 18 x 14 x 5 inches, this cushion is lightweight yet sturdy, making it easy to move between office, home, and car seats to maintain ergonomic comfort wherever you sit. Easy care and wide compatibility - The removable elastic cover is machine washable for simple maintenance. Its versatile shape fits not only office chairs but also wheelchairs, sofas, and lounge chairs. Ergonomic comfort for long seating - An orthopaedic seat cushion with a memory foam donut design relieves pressure on the tailbone and lower back, delivering superior comfort during extended sitting at home or in the office. Use scenarios - Desk and study sessions: Ideal for long workdays or study periods to reduce tailbone pressure and support proper posture. - Commutes and travel: Suitable for car seats to improve comfort during long drives or daily commuting. - Everyday seating and recovery: Works on wheelchairs, sofas, and lounge chairs to provide additional support during rest or recovery.