1. they are very thin
2. Stick sufficiently strong at any CD to a label has solved
3. can be produced by standard templates simply print
4. Handling easy (detached from the support paper)
However, I use only blanks possess any pressure. It now uses CDs with pressure (manufacturer, capacity, etc.), this show through sometimes.
If you have a CD, however, previously described with a CD pen, this writing will shine through to light or unprinted areas of the labels!