Thank you for viewing. This is a product from quite a while ago. It's from Felissimo, and I used to repurchase the same item. However, I couldn't use it anymore after switching to a double-sided grill, so I just put it away. I'm listing it because I assume the quality of the stone hasn't changed. Please understand that I cannot accept claims or returns before considering your purchase. Quality indication: Material / Zeolite Contents: Approximately 330g