Belt of growth

This thick brass belt looks like it is riddled with cracks. It bends as though it has been stretched out of shape.

Once per day, the belt’s wearer may, as a standard action, speak a command word and grow to twice his usual size. (This functions as the enlarge person spell, except that it is not limited to humanoid wearers.) The effect lasts 10 minutes, or until the wearer speaks another command word to end it.