On the psychic level this item provides the fields Shielding and Resistance.
Shielding: Your body and mind naturally produce a psychic membrane around you all the time that prevents most psychic intrusions into your mind, at least the casual ones. 

This field strengthens this into a hardened field of psychic force that activates to stop negative energies and ideas from reaching your mind, while allowing positive feelings and energies in without trouble. Even major league psychics and less than natural entities will have trouble getting through this!

This field is for items only. 

(More info below)