303 Marine Clear Vinyl Cleaner for Isinglass & Strataglass, 32 oz | Cleans and protects clear marine vinyl while helping prevent yellowing, hazing, and cracking.

I started using this on the sides of my hot tub after the sun began fading and dulling the original finish. The constant sun exposure was really taking a toll, and this did a great job bringing the look back while adding protection. I recently tried 303 Products Marine Clear Protect, and I’m genuinely impressed. It does exactly what it claims—creates a protective barrier that helps prevent fading, chalking, and oxidation. I used it on my boat’s gelcoat and upholstery, and everything looks noticeably cleaner with a deeper, richer finish. Application couldn’t be easier—just spray it on and wipe it off. No greasy feel, no streaks, and it dries quickly. I also tested it on my car’s trim and tires, and it restored a clean, like-new appearance that’s held up well against sun and rain. If you’re looking for a versatile protectant that actually works and helps keep surfaces looking great despite harsh conditions, this is a solid choice. Definitely recommend.

Marine Clear Protective Cleaner is outstanding! It cleaned and restored my boat’s canvas far better than I expected. It easily removed dirt, salt residue, and light oxidation, leaving everything looking bright, clear, and refreshed. What really impressed me is how it not only cleans but also leaves behind a protective finish that helps repel water and grime. The shine it brings back to clear surfaces and trim makes the boat look well-maintained and almost new again. It’s simple to apply, wipes off easily, and doesn’t leave any streaks or haze. If you’re looking for a reliab

This is an amazing product for vinyl windows. And that's what my review is for it's not for boats or anything else it's for vinyl windows when you put it on you do a section at a time using microfiber towel clean them then use a separate microfiber towel, I have puffy ones, to buff it. And I mean buff in little circles, not just wipe it off like you do with Windex. Give it a shot I think you guys will like it if you have the correct towels, which I've told you what to get, and the right technique, which I have already told you how to do. It helps repel the dirt, so when I'm out there cutting the grass and shooting dust all over the place it helps it not stick to the windows. And also has UV protection in it. You see my backyard I don't have trees and I could have used it 7 years ago when I bought this house because now I have some windows that have shrunk unfortunately. Try it I think you will like it. Some of those other reviews are talking about the cracked bottles or what have you. That is not about the product it's about the packaging. Try it it's amazing! My dog can see the squirrels clearly now, lol.

I ordered this to renew a canoe that had seen better days as per the manufacturer's recommendation. There were scratches and dirt which, like magic, this 303 cleaner and polish took care of with little effort. The scratches and gouges still remain, but they aren't as visible, plus the product enhanced the color and shine of the canoe. I recommend reading the directions - don't use in sun, and don't over apply to avoid streaks and smears. Decent product and helped spruce up my canoe.

I’ve been using this 303 Marine Clear Vinyl Protective Cleaner on various outdoor surfaces around my boat, RV, and patio furniture, and it’s easily one of the best products I’ve added to my maintenance routine. This cleaner does a great job of lifting dirt, grime, and light oxidation from vinyl and clear plastic surfaces like Strataglass, Eisenglass, and other marine windows — and it doesn’t leave behind streaks or a greasy film. It’s also safe on vinyl and plastics, with a formula that avoids harsh solvents like alcohol or ammonia. What really sets it apart is the UV protection. After cleaning, the treated areas feel like they’re sealed against harmful sun exposure, which helps slow down yellowing, cracking, and brittleness on surfaces that get intense sun all day. That’s especially useful for clear vinyl panels that can degrade quickly when left untreated. I also appreciate that it leaves a natural, non-streaky finish — surfaces look clean without an artificial shine, and you can tell the protective layer is actually doing something rather than just sitting on top of the material. Application is easy: spray on, wipe with a microfiber cloth, and you’re done. I’ve used it on boat enclosures, motorcycle wind screens, and even patio vinyl cushions — and the results have consistently kept those surfaces looking newer and clearer over time. Overall, this cleaner is a solid investment for anyone who wants to maintain and protect outdoor vinyl and plastics, and I’d recommend it for marine, RV, or outdoor living use.

Works great on boat seats.

Easy application. Very good product

Not impressed. Seems to just take the layer of dust and dirt off that I can do with a wet cloth. I'll see if the "protective" part works after a few rides on the lake.

Does everything it states it does. Leaves vinyl well conditioned an protected

Buen producto

This stuff is great!! I used it on my boat windows and on my Argo windows. It seems to soften the vinyl and when you look at the windows after, you think they are brand new. Definitely clean the windows before with water and remove them from the vehicle first. You will be surprised how great the windows will look after!

Fantastic product, follow the instructions and it will restore your vinyl windows to brand new

Liked the ease of use. Used to re invigorate a vinyl spa cover. Very pleased with the result