Made of glass and is guaranteed to withstand temperatures of up to 350 degree centigrade Can be safely used in the microwave, oven, fridge, freezer and dishwasher and non-porous glass will not absorb stains or odors Unlike plastic will not leech chemicals into your food even over repeated usage and unlike regular soda lime glass will not turn milky or cloudy with repeated usage Color: Transparent, Material: Glass Capacity - Approx 150 ml, Package contents :- 6 pieces.