The Expo Click has a unique Safety Seal Valve that prevents marker dry out. The cap-free design makes the marker easy to open and close with one hand. Expo Click Markers erase cleanly and easily on most whiteboards and nonporous surfaces. Choose from 6 bold and very visible colors in the fine point, and 3 in the chisel tip. Uses certified AP nontoxic ink and conforms to ASTM D4263. Why not start with the Click in Black right now.