These are the same high-quality inner sleeves Mofi uses for their 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. 
 Three-Ply
 Non Scratching
 Anti Static
 50 Pack
 High Density Polyethylene