These economical yet highly useful and delicate task wipers are soft, non- abrasive and are considered safe for use on most delicate surfaces. Of course, one would be wise to carefully analyze the impact of these wipers on any surface to which they might have special concern, and do the appropriate inspection to make sure that this choice of wiper is acceptable. The Kimwipes EX-L Wipers are made from 100% virgin wood fiber. SPI Supplies also offers a novel Push-Up™ Dispenser Box for the easy removal of Kimwipes from its original factory-supplied green box container.