high quality and food safe silicone, with non-stick effect ? no previous greasing necessary, temperature range: ? 60 to + 230 °C (for ovens, microwave ovens or freezers), when used correctly, the following points should be observed, always allow baked goods to cool, never bring baking pans into direct contact with hotplates, fire or grill (it is best to place the baking pans on grids or baking trays) never cut out the baked goods with sharp objects, never use aggressive cleaning agents, but clean by hand