What are the dimensions of the Purple® Seat Cushions? We have several options! You can find all our seat cushion dimensions and description, HERE. Related articles Can I cut the Purple™ Seat Cushion to fit a specific seat size? Can I cut the Purple® Seat Cushion to fit my motorcycle seat? Can the Purple® Seat Cushions be used in the shower? What size of pillows do you offer? Do you only offer one pillow size? What Purple® Seat cushion is recommend for coccyx pain?