Random Magic Armor (any level)

Slick armor seems coated at all times with a slightly greasy oil. It adds a +5 circumstance bonus to its wearer's Escape Artist checks. (The armor's armor check penalty still applies normally)
Aura: Faint conjuration
Caster Level: 4th
Requirements: Craft Magic Arms and Armor, Grease
Price: +3,750 gp
Source: Dungeon Master's Guide v.3.5