These items appear to be wrist or arm guards. They surround the wearer with an invisible but tangible field of force, granting him an armor bonus of +7, just as though he were wearing armor. Both bracers must be worn for the magic to be effective.
Caster Level: 7th
Prerequisites: Craft Wondrous Item, mage armor, creator's class level must be twice that of the bonus placed in the bracers
Market Price: 39,000 gp; Weight: 1 lb.