LLV windshield and mirror covers keep ice and snow from forming or sticking to windshield and mirrors, so Letter Carriers don't have to scrape or brush windows and mirrors clean. The postal vehicle side mirror cover can be attached by simply sliding them over the corresponding mirror. These covers are an excellent option for LLVs that are parked outside overnight! Each cover is specifically designed for LLVs, constructed of durable Marine Vinyl and allows for an easy, one-person installation. Includes two large mirror covers. Ships USPS.