Futsal is a 5 v 5 small-sided indoor soccer game played on a hard-surfaced, basketball-sized court with a smaller, heavier low bounce ball. It is played with touchline boundaries and without walls.
This is the game that outdoor soccer players around the globe play to refine and maintain their control skills and touch. It is superior to walled soccer in terms of developing better skills and technique. In traditional American walled soccer, players regularly whack the ball (and sometimes their bodies) against the boards which promotes improper technique and too often rewards errant play. In futsal, players are constantly reminded to play the same quality control game that is required for success in the outdoor game.