Top performance food containers. Stackable, made of tempered glass making them SUPER-RESISTANT. SEE-THROUGH lid featuring a snap-on design to create a LEAK-PROOF seal. Frigoverre Evolution can be transferred from the fridge to the microwave (with lid not sealed) and oven (without lid). It is OVEN-SAFE up to 220C. Dishwasher safe. 100% Made in Italy.