Wondrous Item, artifact
a simple soft leather wrap to protect the hands of the wearer well striking unarmed.
and this is how your family raised you, be unassuming blend in before I strike it the family way. Just as it our way to hide our secretes in plain sight a small near invisable sigil hides a magical compartment that gives these simple wraps their gifts. in a fraction of a second they can harden to diamond like quality and become soft as leather as needed. that not all when it does this a the knuckles become sharp as razorblades and you can execrate the vials content through them into your victim.
Notes: Natural Weapon: Slashing, Bonus: Unarmored Armor Class, Wristwear