This is the question I have also asked after I first held the pens in the hold and tried. The pins 1a and the function on all surfaces. I have painted a T-shirt and I must say the pins are top. The colors are strong, not smudge, dry quickly on the painted surface and can no longer be washed out. The same is true on other surfaces ... you can z. B. very good label CDs with it. It has been quite a lot of different colors for each so which. And the pins hold extremely long. I have a T-shirt in size L painted with a single red pen complete and still the pen works perfectly.
It is not always the more expensive Edding. With this offer you get a lot of pins in different colors to a more or less unbeatable price, compared with the "original" Edding. The holding period is also noteworthy not compare after little use with other products already emphasize the sails.