FINSTER Airtight Glass Food Storage Containers : As a family-run company that knows and understands the importance of fast easy and healthy prepping and storing we at FINSTER hold a very high standard for kitchenware. Our company develops high-quality glassware serve ware and kitchen tools that not only look great but make the cooking and serving experience all the more pleasurable. Why You’ll Love It: 1) Borosilicate Glass: Running late dinner’s not ready what to do? Grab a container out of the freezer and stick straight into oven or microwave. Glass containers are crafted of borosilicate glass making them super resistant to thermal shock and extreme temperature changes. 2) Locking Lids : Messes messes messes everywhere. Well no messes with this one. Hinged locking lids securely snap shut creating an airtight seal. Completely leakproof you won’t find any of your food spilled. Airtight seal with air-went valve ensures no mites or moisture contact your food. 3) Space Saving : Breakfast and lunch and snack too. Take it all along. Containers stack neatly making it the perfect choice for coolers lunch bags or backpacks. Carry your food to work school or outings with grace and ease. As they are nesting they are fast and efficient to store. 4) Microwave and Freezer-Safe : You can also microwave the food at your convenience since these glass containers are microwave-safe. However care must be taken to remove the lid first. You can also put dried foods or leftovers in these freezer-safe containers and store them away securely in the fridge for later. Made easy : We believe in home-cooked meals. We don’t believe in stress. Prepare meals ahead of time and freeze refrigerate or stack on the counter for later use. Dilemma Solved : Dinner’s over. Family’s scattered. Leftovers. What to do? Deposit into the freezer for future use. Food will be so fresh no one'll be the wiser.