Grandmaster Feline Armor (5e Equipment)
From D&D Wiki
Armor (light armor), legendary (requires attunement)
This black leather armor has realistic looking cat ears on the attached black leather hood. Attuning to this item will cause your eye pupils to become more slit like, your ears to be more perceptive, your incisors more pointed, and your fingernails to harden like claws. Crafted for a master rogue, assassin, or thief, the Grandmaster Feline Armor is focused on mobility, stealth, and speed.
While you wear this armor, you have a +1 bonus to your AC.
Feline Coat You gain proficiency in Stealth. If you already have proficiency, you may double your proficiency bonus when making stealth checks.