Crystal-clear, BPA-free Tritan plastic lids and bases feature 360-degree clarity. Stain-resistant material keeps plastic food containers looking like new and resist odors. Pieces stack perfectly to save space and stay organized in the pantry or fridge. Safe for the dishwasher, microwave and freezer 100% leak-proof airtight food storage container seal helps prevent spills and leaks. Silicone seal is removable for easy cleaning. Set contains 10 plastic food storage container bases and 10 lids, for a total of 20 pieces: 4 Rectangular Containers (2- 0.5 cup, 1- 4.2 cup, 1- 11.8 cup), 3 Square Containers (1- 0.8 cup, 1- 2.2 cup, 1- 4.6 cup), & 3 Round Containers (1- 0.4 cup, 1- 1.3 cup, 1- 3 cup).