From Pathfinder Treasure Vault (Remastered), which isn't enabled.

Trollhound Vest

ITEM 6

UNCOMMON

Price 230 gp

Bulk 2

Category medium

Group leather

AC Bonus +3

Dex Cap +2

Strength +2

Check Penalty −2

Speed Penalty −5 ft.

This suit of +1 hide armor is sickly green and covered in thick warts and nodules, fashioned from the hide of a trollhound and imbued with some of the beast's vitality. Wearing this armor gives you a –1 circumstance penalty to all checks made using Diplomacy to interact with trolls and a +1 circumstance bonus to Diplomacy checks used to Make an Impression in communities traditionally plagued by troll attacks.

Activate (manipulate)

Trigger You take damage from a melee attack while you have half or fewer of your normal maximum Hit Points

Effect Your body knits itself back together, healing you for 3d8 healing Hit Points.

Craft Requirements The initial raw materials must include the hides of at least two trollhounds.

Pathfinder Treasure Vault (Remastered)ORC