Easy to use and easy to take care of. Oven Safe Can be used for baking or cooking in the oven. FOOD GRADE & BPA FREE. Microwave Safe Can be used for heating in the microwave. The borosilicate material makes it can go straight from the refrigerator to the microwave or oven to the table. Freezer Safe Can be used for freezing in the refrigerator. Make your freezer more organized. Dishwasher Safe Can be used for washing in the dishwasher. Save your time and make your life much more convenient. Leak-Proof Keeping Your Meals Organized and Delicious Airtight snap locking lids with silicone seals keep your food fresh for longer and prevent liquid from leaking or spilling over. High-borosilicate glass BPA-free Airtight lids Silicone sealing ring 10 Pack glass food storage containers with lids 1050ML*5 & 370ML *5 Perfect for meal prep, cooking, serving and storing. Tip1: Please wash the containers and lids upon arrival to protect the rubber seals from sticking to the glass containers. Tip2: The rubber seal was designed to removed from the lids for washing conveniently, so if the seal falls apart, please put it back. Temperature range from -4℉ –752℉ (-20℃ – 400℃) Preparing your meals in advance Storing leftovers Packing meals for work, gym or picnic