Come and see our amazing products. The Glass Storage Containers are 100% BPA Free, and made out of high-borosilicate glass for easy heating and durability. non-porous glass,100% Free of Harmful Chemicals.(BPA free lids, specially designed snap down, no leak lids are completely air and liquid proof.) The lids are not oven or microwave safe,please remove the lids before heating and cooking food.It's safe to wash the lids in the dishwasher, but high temperatures over a long period of time can deform the silicone sealing strip at the edge of the lid. Please wash the lids by hand as much as possible. Pls confirm further with us if any query about packing info, inventory status and time schedule.