The Armour of Agility is a very rare Medium Armour that doesn't limit your AC's Dexterity bonus.

Layered sheets of smelted, shaped, and smithed steel have been etched with a sweetly luminous gold. Its outward appearance is heavy. And yet it's so light when you lift it, like lifting a bag of shrunken dead leaves.
Properties
Required Proficiency:
Rarity: Very rare
Weight: 24 kg / 48 lb
Price: 2900 gp
Special
The wearer of this item gains:
- Exotic Material: Add your Dexterity Modifier to your Armour Class. Additionally, this armour does not impose Disadvantage on Stealth Ability Checks.
- Saving Throw +2.