Technology in sport has come along a long way, from the simplest timing devices such as stopwatches, to advances in fabric and nutritional information, allowing athletes to compete and train in comfort, as well as to their optimum level of fitness. Developments in swimsuit technology have meant that Olympic swimmers get the benefit of slimmer, more hydrodynamic suits. Football (also called soccer) has evolved over the years as well, with changes to the ball's makeup so that it performs better when waterlogged. Another major advance is the architecture of snow skiing runs and bobsled tracks. Finally, of course running shoes have come a long way from the earliest boots to the lightweight shoes pioneered by Adidas today.