Use Bistro Chalk Markers on chalkboards, light boards, windows, and most non-porous surfaces. A wonderful way to create chalkboard art to attract attention. They are opaque, water based, pigmented, erasable with a damp cloth. Each pack includes 4 markers: pale violet, peppermint, blush pink and pastel peach. Sold as 2 packs for a total of 8 markers.