  Transversity distribution is one of the three fundamental parton
distributions that completely describe polarized spin 1/2 nucleon. Its chiral
odd nature prevented for many years its experimental exploration, however
presently we have obtained great deal of information about this distribution.
This includes experimental data from Semi Inclusive Deep Inelastic Scattering,
knowledge of scale dependence and phenomenological extractions. I will discuss
main features of this distribution and indicate the future improvements of our
knowledge.
