Highest quality: the food storage containers made of tempered glass are 3 times stronger than normal glass. This improves the resistance of the material to heat, scratches and shocks. Innovative closing system: thanks to the glass container and the airtight plastic lid, our storage jars have an antioxidant function that keeps food fresh for longer - no more leaks and bad odours in the fridge Extremely versatile: developed for all the needs of food storage, thanks to the temperature-resistant glass, the containers are suitable for dishwasher, microwave, as well as fridge and freezer, -20 to 120 °C Environmentally friendly: Glasslock glass is made from 100% natural raw materials, BPA free, free from estrogen, 100% recyclable to protect the environment Production: 100% made in Korea