Food Grade Silicone: Food Storage Containers Are Made Of Worthwhile Quality Food Grade Silicone, Free Of Bpa, Pvc, Lead And Phthalate; Cpc Certified, Safe For Children And Adults; Dishwasher, Microwave, Oven And Freezer Safe | | Set Of 4: The Nesting Silicone Container Set Includes 4 Different Sizes: 3.9" X 2.7" X 1.7" (6.7Oz); 4.3" X 3.5" X 2.1" (10Oz); 5.1" X 4.3" X 2.7" (20Oz); 7" X 5.7" X 3.5"(30Oz); Stackable Design, More Space-Saving | | Airtight Leak-Proof: The Bento Box Features A Double Sealed Lid To Keep Food Fresh And Prevent Leaks And Spills, Great For Taking On The Go | | Portable Reusable: Compact Design Allows You To Take It With You Wherever You Go; Mark With A Marker For Better Categorization And Organization, Just Wipe With A Rag For A Fresh Look That Can Be Used Again And Again | | Wide Applications: This Silicone Lunch Box Is Suitable For Sandwiches, Salads, Pasta, Fruits, Nuts, Candies, Snacks, Etc., And Can Also Be Used For Pizza Do.