Weighted-knuckle glove
Weighted-knuckle gloves, also called sap gloves, are a type of handwear-concealed melee weapon used in hand-to-hand combat, consisting of a pair of ordinary-looking impact protection gloves usually made of leather or a synthetic material, with powdered lead or steel sewn into a special pouch covering the knuckles, and often also the backs of the fingers and the hand. In some designs, this distinctive feature is obvious, while in others it is almost completely indistinguishable from an ordinary glove, allowing the gloves to be worn in plain sight without suspicion.