Our lids are Easy open-and-close four-latch lids for a strong leak proof, air-tight and water-tight seal, keeping delicate snacks handy and fresh while on the go Container Easily Sealed and Air Tight. It is perfect for serving plate and keep leftovers fresh. Glass storage containers with lids airtight are 100% BPA Free, and made out of glass for easy heating and durability. Our container is oven safe up to an very high temperature of 600F degrees, serve delicious meals and after cooking, store the leftovers in the container with leakproof lids in the fridge, Our glass container safe in oven, microwave, fridge, freezer and dishwasher.