VACUUM BOXES: The shatterproof FRESH & SAVE vacuum boxes, which are made of BPA-free plastic, are real all-rounders: Irrespective of whether in the microwave, freezer or refrigerator, the lightweight storage boxes will never let you down and are suitable for use in a dishwasher. The transparent storage box, which are made of borosilicate glass, are also oven-proof and their modern design makes them ideal for serving from.