These are the same high-quality inner sleeves we use for our vinyl releases
They are imported, three-ply, anti-static, premium sleeves (similar to rice paper) and work with both LPs and laser discs
Back construction consists of a paper layer sandwiched between two sheets of high-density polyethylene (HDPE) with a translucent HDPE front
Every record, if brand new sealed or used should be cleaned
And after cleaning it's a must to replace the inside sleeve with a new one because the cleaning of the record removes the tough, sticky manufacturing residues from the records, but the residues are still in the old inside sleeves!!