There is a lot of misinformation about protecting convertible fabric tops. If water beads on the surface it's able to repel stains right? No. The water protection you get from a convertible top comes from the butyl rubber core sandwiched between the outer canvas and the inner pre-shrunk cotton layer. So for the life of the top, I'm more concerned about stain protection and soiling on the outer canvas. Fabric Protector is the ultimate choice for stain protection. It works by deeply penetrating the molecules of the outer canvas and encapsulating them. It is also completely undetectable once it has dried and will protect your top from soiling and from permanent stains. Fabric Protector will also provide UV protection and last through multiple cleanings before needing to be reapplied. Our Fabric Protector can be used on cloth seats, couches, carpet and any type of canvas convertible top. 10 fl. oz. aerosol can. A quick and easy way to protect your convertible top.