Mr. Food Storage | The Most Innovative Space Saver Bowl/Meal Container Set with Rainbow Colored Airtight Silicone Locking Lids | Special 5 Pieces with Different Sizes and Nested/Stackable Design | Premium Grade PP Material | Dishwasher Safe | 377.2 Comes in a set of 5 different sizes, you can stack them over each other. Made of food grade PP material,its nontoxic, durable, and simply will not break. Being resistant to heat and cold, you can use them in the freezer or microwave. To clean them, you can wash them by hands or using the dishwasher. So, what are you waiting for Keep your food fresh by placing your order now