Review on Waterproof Sweat Proof Car & Truck Seat Cover Protector - Seat Hoody. Universal Fit, Machine Washable, Grippy Backing, Ideal for Swimming, Surfing, Exercise, the Beach, Dogs - Black Waters by Russ Montgomery

I bought one of these for a 3 week trip and am so glad I did. You just throw it over the seat and don't worry about spills, crumbs, wet swimsuits, etc. It's easy to shake off on a mat or outdoors and it's truly waterproof. When I got home I took it off and my seat still looked fresh and the cover was easy to wash. I plan on getting a second one for the passenger seat at some point, but they're expensive.