MoFi LP Inner Sleeves (50)THE INDUSTRY STANDARD FOR VINYL LP PROTECTION AND STORAGE: THREE PLY, ANTI STATIC DESIGN FOR UNPARALLELED QUALITY 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.