Ink wipes away easily with an eraser or dry cloth, so you can use these dry erase markers freely on a traditional dry erase white board or turn a sheet protector into a reusable document The cap can be left off for up to 24 hours without drying out due to the long-lasting ink formulation Mark smoothly in a variety of line widths, on nonporous surfaces like glass or plastic, with these chisel tip markers Enjoy low-odor markers that are ACMI certified and conform to ASTM D4236, meaning they’ve been independently tested and meet strict safety standards for art materials Pack of 8 assorted white board markers includes black, blue, brown, green, orange, purple, red and yellow colors perfect for practice lessons, chore charts, schedules, to-do lists, note-taking, brainstorming sessions and more