Description Brand: Vtopmart Product Quality Grade: Food Grade Lid Material: Plastic + Silicone Container Material: Plastic Features : Recyclable / Healthy / Stackable Bearable Temperature Range: -4--212 degrees Fahrenheit Package Include: 12 medium containers ( 2L ), 24 Chalkboard Labels Washing Instruction: Dishwasher safe for the container, handwash the lid Product Features Reusable & Durable----Made of premium food grade plastic and silicone materials, these containers will help you organize your kitchen better. 100% Leak-proof----With the great sealing performance,Vtopmart airtight food storage containers can keep out water and air. Tight Fit But Easy to Open----4 side-locking lids seal these storage containers tightly, but you still can open and close these containers easily. Freezer and Microwave Safe----The bearable temperature range is -4--212 °F, which means you can use these containers to store leftovers and put them in freezer or microwave.