Pure Box Active products of Luminarc brand are made of tempered glass, which provides increased resistance to high temperatures and mechanical damage. They are distinguished by excellent quality. They can be safely used in temperatures from -20 ° C up to +110 ° C and therefore they are suitable both for freezing and heating dishes in a microwave oven - with Pure Box Active containers you do not even have to open the lid, just open the slider in the lid to allow steam to get out. Thanks to this the meal will not be dry, and the microwave will remain mlean. Pure Box Active containers are extremely functional. Thanks to the lid with mlips and a seal the Pure Box Active containers are completely sealed and hermetic. You can use them to take food to work. They are also ideal for storing food in a refrigerator. Glass is a 100% hygienic material, safe for health and does not absorb odors. Containers are extremely easy to mlean and can also be washed in a dishwasher.