About this item Oliveware Pebblo Round Lunch Box is made of the best borosilicate glass. FDA approved, Microwave (Without the lids), Oven, Dishwasher, Freezer safe (Without the lids). 100% leak proof and 100% BPA Free. They are transparent and display the content. Glass containers can be reused and recycle helping and maintaining a clean environment. With vent lid and snap closures. Heat & cold resistance -20C to 400C Oliveware Pebblo Round Lunch Box is made of the best borosilicate glass. FDA approved, Microwave (Without the lids), Oven, Dishwasher, Freezer safe (Without the lids). 100% leak proof and 100% BPA Free. They are transparent and display the content. Glass containers can be reused and recycle helping and maintaining a clean environment. With vent lid and snap closures.