Let the whole town see your spirit! Our 1.62 oz. bottles of window chalk are perfect for writing slogans, cheers or other messages on car windows or other glass surfaces during Homecoming parades or other events. Using Car Chalk on vehicle windows during parades is a nice addition to those beautifully decorated floats! The non-toxic, water soluble chalk wipes off with a wet paper towel. Glass chalk comes in 6 great colors.