When a shop asks whether you want "vinyl or cloth", the conversation is usually about three specific materials. Almost every quality replacement top sold in the United States is made by the Haartz Corporation, and the grade you choose changes the look, the noise level, the lifespan and the price.
The three grades
| Material | Construction | Typically OE on | Relative cost |
|---|---|---|---|
| Pinpoint vinyl | Grained vinyl face over a cloth backing | Most American cars, 1950s–1990s | Lowest |
| Stayfast cloth | Solution-dyed acrylic square-weave face, butyl rubber inner layer, cotton backing. Roughly 1.0 mm thick, 60 inch width. | A long-running OE specification across many makes | Middle |
| Twillfast RPC | Twill-weave acrylic face with a dobby backing | Later and higher-end applications, commonly European | Highest |
Where each one genuinely wins
Pinpoint vinyl
It is not the budget option so much as the correct option on a great many domestic classics — the distinctive pinpoint grain is what left the factory. It handles sun well, cleans easily because the surface is sealed, and costs the least.
Where it loses: it is the noisiest of the three at highway speed, and it looks like vinyl. On a car that originally wore cloth, it reads as wrong to anyone who knows.
Stayfast cloth
The middle ground, and the one most people upgrade to. The acrylic face is solution-dyed, meaning colour runs through the fibre rather than sitting on it, so it holds its appearance far better than a coated fabric. The butyl rubber inner layer is what makes it waterproof despite being woven.
It carries a higher wear rating than vinyl and looks considerably richer. It is less durable and less sound-deadening than Twillfast, and it lacks the dobby backing found on that grade.
Twillfast RPC
The most durable and the quietest, with a twill weave that reads as a more expensive material because it is one. If the car came with it, replacing it with anything else is a downgrade you will hear as well as see.
How we would choose
- Original American classic — pinpoint vinyl, if that is what it wore. Correctness beats upgrading on a car being judged.
- Daily-driven convertible — Stayfast. The best balance of appearance, longevity and cost.
- The car came with Twillfast — stay with Twillfast.
- Highway miles, top up — pay for the cloth. The noise difference is real and you notice it every drive.
The part the material does not fix
None of this matters if the frame underneath is wrong. A top of any grade fitted over collapsed pads or bent bows will sit badly and wear through early at every high spot. We check that before quoting, not after.
We keep samples of each in the shop. Bring the car to Monroe, feel the difference between them in your hand, and get an itemised estimate at no cost. More on our convertible top replacement page.