It fits a half size 18″ x 13″ baking sheet and can handle temperatures up to 480°F. Nothing sticks to it — cookies slide right off. You can use it on the countertop to knead dough, too. Above, a photo of kabocha (Japanese pumpkin) and acorn squash I grilled last week. You can see the mat under the squash. I cut the squash into pieces, rubbed a little olive oil on them, sprinkled them with salt and baked them at 400°F. I was going to make soup but I forgot to get chicken stock, so we just ate them. They were delicious.
I bought the Artisan brand, which has an average rating of 4.5 stars with over 1,500 reviews. A set of 2 costs $(removed)