The snap on lids create an airtight vacuum seal that will keep your food secured and fresher longer. Featuring an air vent for microwave heating and four convenient sizes, Thin Bins are great for meal prep or lunch box set. Leak proof design makes them perfect for indoor food storage, work, camping, hiking, travel and more. Each container is collapsible to 1/3 its original size for easy compact storage and organization. Stop searching through your cluttered container cabinet looking for the right lid for your containers. The lids snap shut making them stackable and saving you 60% more space! Thin Bins are the perfect choice for small apartments, dorms, RVs, camping and more! Thin Bins are made from 100% FDA compliant non-toxic, BPA free, food grade silicone. They are odorless, tasteless, non-stick, leak-proof and easy to clean. The temperature resistant silicone makes them microwave, freezer and dishwasher safe. Great for storing leftovers in the fridge and microwavable for when you’re ready to enjoy your meal. Just pop them in the dishwasher when you are done for hassle-free cleaning.