The Dual Lane Criss-Cross Zorb Track allows 2 Zorbers to race against each other with a collision criss cross in the middle. This is great for pavement or any surface other than a nice grass yard, great for nice yards too! This adds a very controlled zorbing experience and is great for high volume events where time is of the essence, down and back equals one turn. Requires (1) 110v outlet to keep the track inflated. Total size is 75Lx20W.