Professional-quality paper sleeves with a cellophane window and a flap. These are high quality sleeves made in the USA. The paper stock is 60#. We have seen cheap sleeves from China that are much thinner and leave stains and dust all over the disc, resulting in an unreadable master after 2 months of storage. For even better disc protection with often-used discs, choose Tyvek sleeves to avoid scratching the disc.
For a better price buy these by the carton as item CD-SLEEFWF.