The ADCO 34813 Tyvek Designer Series Class C RV cover is made to fit a 23'1 to 26' size. This gray and white cover has a triple-layered Tyvek top panel with triple-layered polypropylene sides. It works in all climates and includes UV and wind resistance. The slip seam strap system fits the RV's shape to reduce the amount of wind impact, while the built-in vents allow for air to pass through. Comes with a storage bag and 4 tire guards.