EXPO® Dry Erase Marker Perfect for the office and classroom. Erases easily. Use on erasable marker boards, glass and other nonporous surfaces. Nontoxic. Bold markings are perfect for the office and in the classroom. Erases easily for quick, clear clean-ups. Use on erasable marker boards, glass and other nonporous surfaces. Global Product Type: Markers-Dry Erase; Marker Type: Dry Erase; Assortment: N/A; Color(s): Blue.