Let's start with the base of the sneaker or the bottom sole. This is the part of your sneaker that actually touches the ground while you are going through your everyday activities—walking, running or just tapping your toe to some great music. Generally speaking, the bottom sole of your sneaker is made out of different types of rubber depending on the athletic sport you are going to enjoy. Depending on the physical activity you are engaged in, you'll want a good solid bottom sole made of any one of a number of different rubbers or rubber compound materials.