Our disc case is made of PP or PS. PP is short for polypropylene ,and PS is short for polystyrene. Both are well-knit plastic. Our disc case can be divided into cd slim case, C-shell case, blu-ray case and dvd case. According to the contaioner, they are single DVD disc loaded, double-piece containers, three containers, 4, 6, 8,10 pcs containers and so on. Specific mensions of the case and packing dimensions are in the table below. Variety of colors for your choice. Also Custom production accepted. Welcome to contact us!!