1.Simple design with good image, 2.fibre tip,smoothly-writing, 3.ink write with bright color, non-toxic Permanent marker1.Permanent marker with oil-based ink,2.Sun-proof and water-proof, non-toxic3.Never fade fibre tip,write smoothly,4.Good for make marks on many surface,can not be erasable,5.Suitable for office,school,hotel etc.