Indoor and outdoor use car cover. This cover features Moisture resitant fabric this is not to be confused with "waterproof". This cover will keep the vehicle dry except in a heavy rainstorm or prolonged exposure to steady damp conditions such as accumumulated wet snowfall or long rainstorms. With time, any moisture or coondensation under the cover will evaporate through the breathable fabric. The evaporation time will depend on the amound of humidity in the air and the time of day. This cover is custom made to fit a roadster. The cover will fit cars with single and dual roll bars.