Duralex Glass PICARDIE is made of tempered glass, which makes it highly resistant to impact, cracking and thermal shock - both cold and hot. It can be moved directly from the freezer to the microwave. Duralex tempered glass withstands drops on the ground, tested and approved by the manufacturer. When it's broken, it shatters into powder. Duralex is a French brand that is very recognizable in the market and has a long history. They check the quality of their products all the time. This results in their timelessness, durability and excellent condition that is maintained for years. The product is made of tempered soda-lime glass - very high impact and shatter resistance (tested by the manufacturer), higher than ordinary glass. Tempered glass for possible breakage breaks into powder, which eliminates the risk of cutting the skin with large pieces of glass. Thickened, reinforced flange. There are characteristic grooves (beveled lines) around the glass - an iconic French design, which also ensures better grip. Installable. High thermal shock resistance: up to 130°C. Maximum heat resistance: up to 150°C. Can be stored in a freezer: up to -20°C. Suitable for use in the dishwasher and microwave oven. 100% recyclable.