1Easy to color, handwriting will not penetrate, color lasting, quick drying 2Wide-head fiber pen tip, easy to color large areas, soft head writing width is free and smooth, similar to brush strokes. 3Oval pen holder, comfortable to hold, can ensure long time use without hand fatigue. 4Environmentally friendly PP material and good sealing performance make the marker last longer. 5Double head design to meet different painting requirement.