Sports shoes are designed with features that help athletes perform better. Two of the most common features are spikes and cleats. Spikes are small metal or plastic protrusions that are attached to the sole of the shoe to provide extra traction on the playing surface. Cleats are also attached to the sole of the shoe, but they are typically made of rubber or plastic and are designed to provide extra grip on the ground. Both spikes and cleats help athletes maintain their balance and increase their speed.