The material below is Open Game Content from a 3PP source
Agile Half-Plate: This style of half-plate is specially crafted in a manner that allows extra maneuverability for some physical activities. The armor check penalty for Climb checks and jump checks is only –4 (masterwork and mithral versions of this armor reduce this penalty as well as the normal penalty). In addition, unlike most heavy armors, the wearer can still run at quadruple speed instead of triple speed.
|Armor||Cost||Armor/Shield Bonus||Maximum Dex Bonus||Armor Check Penalty||Arcane Spell Failure Chance||Speed 30 ft.||Speed 20 ft.||Weight1|
|Agile half-plate||850 gp||+8||+0||–7||40%||20 ft.2||15 ft.2||55 lbs.|
1 Weight figures are for armor sized to fit Medium characters. Armor fitted for Small characters weighs half as much, and armor fitted for Large characters weighs twice as much.