You have resistance to nonmagical damage while you wear this sweater. 

Don't hurt my boy: This sweater has 3 charges While wearing it, you can use a bonus action and expend 1 charge to make yourself immune to nonmagical damage until the beginning of your next turn. The sweater regains 1d3 expended charges daily at dawn.

While attuned to the sweater, you regain 1d6 hit points at the start of your turn if you have at least 1 hit point.

Notes: Resistance: Bludgeoning, Piercing, and Slashing from Nonmagical Attacks, Immunity: Bludgeoning, Piercing, and Slashing from Nonmagical Weapons, Bo, Combat, Warding