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

Crushing Coils

ITEM 5

RARE CURSED INVESTED MAGICAL

Bulk 1

Category light

Group leather

AC Bonus +1

Dex Cap +4

Check Penalty −1

Made from constrictor snakeskin, the strips of this +1 leather armor wrap around you like an anaconda might wrap around its victim. The first time you roll a 1 on any attack roll or check after donning the armor, it fuses with you and constricts. It constricts anytime you roll a 1 on any attack roll or check thereafter. When the armor constricts, you're Restrained for 1 round.

Activate (concentrate, manipulate)

Effect The armor wraps around you, allowing you to don it by the time the activation finishes.

Pathfinder Treasure Vault (Remastered)ORC