1)water color pen have good quality.
2)the wanter color pen set have reasonable prices.
3)The tip is made of fabric material.
4)Different colors matched to a set is available.
5)Inner paper card can do the design as customer.
6)The ink can keep drawing for more than one year.
7)Can drawing on paper, in cloth, or on wall.
8)Smoothly writing, many styles, good price, using good quality ink, nice packaging with good looking, Good Gift for Children.