Sunbrella Covers: Calmark vs. ADCO

I think it depends on whether or not one of the stock size ADCO covers happens to fit your particular trailer properly - if you get a good fit, the material will last a long time, if it is too big, it becomes difficult to secure properly, and the wind will take its toll. CalMark has the advantage of being manufactured to order (in the USA) to the specific measurements of your unit. We had one for our previous trailer as well has for our present trailer, and they both fit well, and held up well.