15.5cm long, 15.5cm wide, 8.5cm high I have no information about the material, as I don't have any details from when I bought it. When baking, I think it was easier to remove the baked goods if you greased the inside with butter or something similar. I used it about twice and then stored it. There are some small scratches on the inside and outside, but it's still usable. I look forward to purchases from those who understand that this is a home-stored item.