1) Use for Permanent Marker Highlighter Marker White Board marker... 2)The ink reservoir is the important component of marker, highlighter, watercolor pens, whiteboard pens, etc.
3)Inner material is DTY (Draw Textured Yarn), while polypropylene is the outer shell.
4) And all size is available, it can be customed. of course, it has a good absorption of ink.
high quality fibre filter