GET RELIEF FROM BACKACHE & PAIN WHILE SITTING : Hard and even traditionally padded seating surfaces create pressure on your tailbone causing Pain, Poor posture, Improper spine alignment, Decreased blood circulation, Pinched nerves & Orthopedic problems. OUR CUSHIONS CAN HELP! ASSISTS IN RELIEF OF SCIATICA NERVE, LOWER BACK PAIN, NUMBNESS AND POINT PRESSURE ON YOUR TAILBONE - promotes healthy weight distribution RELIEVING PAIN NATURALLY - Experience extreme comfort EXTRA SPACE The cushion is 19 x 17.5 x 3.5 inches to provide plenty of room and to fits on almost any seating surface . You'll never go back to sitting without it again!