... safety standard;No need to worry about the children putting the tip into mouth.2.Write freely, ... be written on any materials;Even if the children draws on wallpaper,cloth or sheet,you just ... condition.Let you shouldn't bothered with the children's doodling on anywhere.3.Repeatly used,economy and ... wiping,repeatedly used,and economy.SO let your children in the light-hearted doodling,enjoy the endless ...