I bought these liners to use on our portable grill. They are strong and durable and I grilled with them and cleaned them several times while we were camping. They're very convenient because they essentially convert the grill into a griddle so we were able to cook everything from foil dinners to pancakes. You still get the grill marks as well. Great product! I am going to use them to line my oven as well as I am sure they will catch spills and clean up easily.