Avoid extreme temp changes. Hot. Cold. Freezer safe. Oven & microwave safe. Dishwasher safe. Easy clean-up. Read safety and usage instructions on back before using. Usage instructions: PyrexÂ® glassware can be used for cooking, baking, warming and reheating food in microwave ovens and preheated conventional or convection ovens. Pyrex glassware is dishwasher safe and may be washed by hand using non-abrasive cleansers and plastic or nylon cleaning pads if scouring is necessary. This product is intended for normal household use only; it is not intended for camping, industrial or commercial use. Plastic lids are for microwave and storage use only, and are BPA free.