CRAYOLA-Washable Window Mega Markers in Blue, Pink, Yellow, and Green. These markers make it easy to decorate windows, glass, mirrors, Mylar, and more. Window Mega markers cover more area and contain more ink than regular Crayola Window markers. That is because of the extra wide nib and greater ink supply-almost 3 times more! Non toxic. Conforms to ASTM D4236. Made in Italy.