Our office and school supply products are designed for the discerning people who appreciate high caliber products which enhance the appearance of their value Our products communicate to all users that we value superior products for quality management We know that innovation drives success and product quality are essential Our products will the perfect fit for all official purpose with high standard quality Features . Use Bistro Chalk Markers on chalkboards light boards windows and windshields. They are opaque water based pigmented erasable with a damp cloth Specifications . Color Black Red Blue White