Thieves' Leathers were fabricated to aid a master thief in his search for the ultimate prize. What that prize was is a secret that died with him when he met a trap he couldn't handle despite built in safety nets. 

The armor is studded leather that grants a +2 bonus to its wearer's DEX score to a maximum of 22, 24 with the use of a manual. It also grants Advantage on both ability checks and saving throws using the DEX ability.

Thieves' Leathers further offer immunity to bludgeoning, piercing, and slashing damage from non-magical weapons. 

The armor offers Resistance to damage from traps due to an early warning vibration caused by magical sensors though the warning can be ignored.

You have a +3 bonus to AC while wearing this armor.

Made from tough but flexible leather, studded leather is reinforced with close-set rivets or spikes.

Notes: Bonus: Armor Class, Bonus: Dexterity Score, Bonus: Ability Score Maximum, Immunity: Bludgeoning, Piercing, and Slashing from Nonmagical Weapons, Resistance: Damage Dealt by Traps, Advantage: Dexterity Ability Checks, Advantage: Dexterity Saving Throws, Rogue, Combat, Warding