Stackable and nesting design3 capacities: 330ml, 540ml and 1180mlSquare shapeClip lock non-spill lidHermetic seal keeps food fresherSpace efficientBPA freeCan be used in the oven (without the lid), microwave, fridge, freezer and dishwasher Keep your snacks and meals fresher for longer with these glass storage boxes. When they aren't being used, you can pop them inside each other to maximise your cupboard space.