From Pathfinder #208: Hoof, Cinder, and Storm, which isn't enabled.

Zetogeki Hide Armor

ITEM 8

UNCOMMON EARTH INVESTED MAGICAL

Price 500 gp

Bulk 2

Category medium

Group leather

AC Bonus +3

Dex Cap +2

Strength +2

Check Penalty −2

Speed Penalty −5 ft.

This +1 fire-resistant hide armor is adorned with the shale-like scales of the zetogeki, a giant reptile that dwells near sites of volcanic activity. Like the armor's namesake, you can adjust the scales to better absorb kinetic energy at the cost of some mobility.

Activate—Shift Scales

Frequency once per day

Effect Until the end of your next turn, you gain resistance 5 to bludgeoning, piercing, and slashing damage, but your Speeds are reduced by 10 feet (minimum 5 feet).

Effect: Shift Scales

Pathfinder #208: Hoof, Cinder, and StormORC