Toesters Softside Enclosures have a strong galvanized frame, which is prepunched, for you to assemble. The PVC fiberfabric cover is tough material, used for decades by truckers to protect cargo during travel. We have been marketing it for many years now with very good results. It can be ordered for trailers 48-60", 72- 84", 92-102" wide. This is not a one size fits all. You tell us the width of your trailer, inside of siderail to inside of siderail, and we prepare your cover to fit as closely as possible that width. Our widths finish in 47.5 - 59.5", 71. 5 - 83.5", 91. 5 - 101.5", in one inch increments and you can slightly modify it for those in between widths. We start at 10 ft for length and go to 20ft and more in increments of 6". We have 2 shapes with 2 main colors plus 4 accent colors. For details please see the Size, Shapes and Colors page listed to the left. We have 3 heights, 56" for snowmobiles, 62" for ATV, 68" for motorcycles. Our enclosures work with tilt or drive on/off. It is shipped via UPS. You buy direct from us, the manufacturer, and assemble it yourself, saving money.