Oyori (3.5e Equipment)
From D&D Wiki
Japanese Riding Armor used by mounted archers.
Base Armor Bonus: +3 Maximum Dexterity Bonus: +2 Armor Check Penalty: -5 Arcane Spell Failure: 30% Speed: 20/15ft. Cost: 155 gp
Special: Due to the design, the wearer takes a -3 Attack Penalty when attacking with a non-Ranged Weapon.