Airtight Lockage OK & Sterilization in hot water OK, Freezer Ok Passed the leakage tests by authoritative local and international institutes It has passed the KEMTI's bending test Passed the strict hygiene and safety tests of U.S. FDA and German SGS Capacity : 3.9lt / 16.2 cup / 4.1qt / 131 Fluid Ounces Water Tight, Air Tight Divider Cups are Removable. Good for Picnic, Potluck. Meets FDA standards; Material : polypropylene (p.p), No BPA Microwave, freezer safe, top rack dishwasher safe