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 Can I cut the Purple™ Seat Cushion to fit a specific seat size? How do I clean the Purple® Seat Cushion? Can I leave the Purple material in a hot car? Can I get a different color of seat cushion covers? What are the dimensions of the Purple® Seat Cushions?