Bistro Chalk Marker, Black from Marvy Uchida creates a dustless, smooth layer, and rich colors that are water-based, pigmented, non-toxic and fade resistant. Wipe away Bistro Chalk Marker easily with a damp cloth. Try them on whiteboards, glass, backlit boards, presentation boards, metal boards, and other non-porous surfaces. Perfect for outdoor use, such as car windows, because the color will remain until you wipe it away. Marker has a 6mm wide point. One marker per package.