If you've baked before, you know that the dough is usually quite sticky. It can become so sticky that it sticks tightly to the surface you use to knead the dough. This isn't necessarily a problem in itself, but it does mean that your measurements will be inaccurate because some of the dough mixture has already been lost.
However, with this extra-large silicone mat, you don't have to worry about that. Because it has a non-stick design that ensures that your dough doesn't stick to it. It also has a non-slip construction that ensures that it doesn't slip and fall while you use it.