Can the Purple® Seat Cushions be used in the shower? The Purple® Seat Cushions won't be damaged in salt or fresh water. Related articles How do I wash the Purple® Pillow or the Purple® Seat Cushion? What are the dimensions of the Purple® Seat Cushions? Can I get a different color of seat cushion covers? What Purple® Seat cushion is recommend for coccyx pain? How comfortable is the Purple® Mattress?