Instruct: Classify the given review into positive or negative sentiment.
Query: waste of money

I do a lot of baking and I had hoped these would help my cakes bake flat rather than with a hump in the middle. These strips are made from material similar to oven mitts and you're supposed to soak them before wrapping around the cake pan. The reason this works (in theory) is because heat then only reaches the top and bottom of the cake. Without this approach, your cake cooks and sets up on the sides quickly before it has a chance to rise fully. So the middle, which cooks more slowly, rises farther.I found the strips to be too narrow to block heat to the entire side of the pan. Also, they were of inconsistent lengths. I suppose that's supposed to provide flexibility for a variety of pan widths. But I would just like two strips of equal length that fit my standard 9 x 1.5 inch cake pans. As a result, I will go back to using a tea towel that is cut to the right width and length. They're cheap and I've had great results.