How to protect a convertible top?

Aerospace 303. They have a line of protectants for many applications. The standard formula is great for lots of uses, I use it mainly on interiors. Makes the surface super slick and protected, but with no gloss or residue.

I looked at the site where I buy my supplies, they have Raggtop and Nanolex listed.

Bestop sells a kit for jeep tops. It is a cleaner you spray on and then a conditioner of some sort. I've used it on my jeep and had good results. It also has a plastic window cleaner if yours has those