MAKE SURE TO ASK FOR THE PLASTIC QUALITY NUMBER OF THE STORAGE CONTAINER YOU WILL BUY!!! This product, which we offer for sale in our store, has the number PP-5. PE is the abbreviation of Polyethylene. Polypropylene plastic is considered the safest type of plastic. Can be used in microwave oven. It is a white and semi-transparent type of plastic. It stands out with its semi-rigid and light weight. It has a high resistance to heat. PP 5 is also ideal for preventing greasiness and moisture in food. PACKAGE CONTENT: 4 STORAGE CONTAINER 4 Storage Container 1.25 lt: 11-5 cm It does not crack or break due to its elastic structure. It is 100% compatible with food contact. It is produced with superior printing quality. It is a product that you will enjoy using with its stylish design.