A pouch apparatus has a pouch body formed at its opposite ends with opposite widthwise slits and incorporates a weighted material, such that when selectively removably installed on a cap as by passing its one or more straps through the pouch slits and then securing such strap(s), the cap can be comfortably worn with the pouch apparatus so installed, providing benefits including discouraging the cap from being blown off, and further the cap with weighted pouch apparatus can be quickly removed and wielded as a self-defense weapon when needed.