The Shape Belt is an item in which Shapes can appear and make items. Geo wears the Shape Belt around his waist.
It can make any shape that become building blocks that Geo can use to make anything. He adds the right shapes to blue prints then brings them to life with his Shape Powers.
It's unknown if Geo built the Shape Belt or someone else did.
In Team Umizoomi VS. The Shape Bandit, the Shape Bandit stole the Shape Belt from Geo. He may not be able to instantly make shapes, but Geo used object shapes around him to make things that can help catch the Shape Bandit.
- The Shape Belt is NOT a source of Geo's power. (Though it advance his powers)