[FREEZER-TO-OVEN-SAFE] The glass food storage containers are made of superior borosilicate glass, strong and not easy to broken. The glass meal prep containers can withstand -20℃ to 400℃.Microwave/oven/dishwasher safe (not the lid) and freezer safe. A perfect choice for food storage.[100% LEAK PROOF & BPA FREE] The newly innovated hinged locking lid with silicone leak-proof sealing loop, makes the glass storage containers with lids 100% leakproof and BPA-Free. No need to worry about leakage when you bring foods out.[12 PIECES GLASS FOOD CONTAINERS] 6 glass containers & 6 lids, total 2 types and 6 sizes are included in the glass storage containers set. Rectangle container: 1x370ml & 1x640ml & 1x1000ml & 1x1500ml. Round container: 1x400ml & 1x950ml. Meets different glass food storage needs.[EASY TO CLEAN AND FOOD STORAGE] The premium glass food storage containers with an easy to open and close lid design and removable silicone loop makes the glass container easy to clean. The glass lunch containers can not only use as On-the-Go containers, but also can store different foods. Keep the foods fresh and prevent odor.[SATISFACTION GUARANTEE] Collisions may occur during product transportation, If you find that the glass containers with lids are cracked, please contact us. Your satisfaction is our motivation.