I wouldn't recommend ProCook products to anyone. After reading loads of great reviews about ProCook I finally decided to purchase a variety of their enamel baking trays, at significant cost - what a disappointment! I followed all the care instructions but the trays had all tarnished in less than 6 months, the edges (like so many other baking trays) are curled over so have also rusted and the customer service when I contacted them was terrible - telling me it was my dishwasher that had caused the problem (even though they clearly mark all their products as dishwasher safe!). A complete waste of money!