The labels are beautifully printed, hold very well on glass and are nevertheless easy to remove again without annoying adhesive or paper debris. The only deduction is for programs to create the labels, which is indeed free to the Herma website is, which is a plus in itself, but they are really only useful for rough marking, once you want to be precise it gets almost impossible and printing shifts sichs to 3-4mm, even if you have used the correct print settings. That's so annoying, otherwise very good product!
