If you have tailbone or lower back pain Kabooti™ can help reduce back pain and increase sitting comfort when you sit for long periods. Like an old-fashioned donut cushion, Kabooti™ has a coccyx cutout to reduce pressure on the coccyx and also has stability lobes to improve seating balance, reducing pain. While you sit, Kabooti™, while remaining supportive, conforms to your unique body shape. Machine washable cover. 17½"W X 13½"L X 3¼"H.