Stackable glass box with lid from French Pyrex Made of ultra-resistant borosilicate glass that can withstand both dishwasher and microwave. Freeze the leftovers from dinner, take out later in the week and put the mold directly in the oven. The glass can withstand temperature changes of up to 220°C without breaking! The mold withstands oven temperature up to 300°C (no lid) and freezer temperature down to -20°C. The glass does not absorb any smell or taste and can also withstand sharp metal utensils without scratching. Available in different sizes.