This might be helpful to those who bake a lot of cakes and don't want that "hump" in the middle of the layer that you have to trim to get a level layer cake. My old cake instructor told us to take an old towel. Cut it in strips that are long enough to fit aroud the sides of your cake pan with a small amount of overlap. Then you need to fold it lengthwise into 3 or 4 layers. Stitch up all the edges and end on your sewing machine.
THEN you soak the strip in cold water, wring it out and put it around your cake pan, securing it in place with a safety pin. It really does work. You can wash them and use them over and over. Wilton sells these strips made of that metallic looking stuff they used to make potholders out of, but these work just as well. I've never had one burn either. The cost, one old towel and a little effort. Katmom