Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor quality

These do not seem to be of the same quality of the Sharpies that I have bought individually or in packs of 3. Some of the colors mark OK but a lot of the lighter colors do not mark well at all, almost like they are empty. I usually use these to mark CDs and DVDs but I think I am only going to be able to use half of these or less for the purpose I bought them for.