Starter set contains three retractable dry-erase markers, 20 pack of cleaning wipes, and an Expo eraser. Fine tip marker features a unique safety seal valve that prevents dry-out. The cap-free design makes the marker easy to open and close with one hand. Bold and vibrant colors are visible from a distance. The low-odor ink is ideal for classrooms and conference rooms. Expo markers erase cleanly and easily on most whiteboard and nonporous surfaces. Certified AP nontoxic ink conforms to ASTM D4263.