Window Marker - Burgundy. Use alone or mix with other colors for a rainbow of possibilities! Use your imagination to create signs, pictures and more with this window marker. Use this window marker on car windows to show your support for your team on game day! Easy to apply and remove from glass windows. For indoor and outdoor use. Washable. Safe and non-toxic. Conforms to ASTM D-4236. Plastic. 4 3/4" Do not use marker on non-glass surfaces.