Agility (Armor Property)

Price: +500 gp
Property: Armor
Caster Level: 5th
Aura: Faint; (DC 17) transmutation
Activation: —
This suit of armor appears more streamlined and elegant than others of its type. It has a smoothly worked surface and no spikes or other accoutrements.
While wearing armor that has this property, you gain a +1 resistance bonus on Reflex saving throws.
Prerequisites: Craft Magic Arms and Armor, cat’s grace, resistance.
Cost to Create: 250 gp, 20 XP, 1 day.

Source: Magic Item Compendium