Sap gloves were popular when I was just getting started in the late seventies--black leather gloves with powdered lead sewn into a pocket over the knuckles. If I remember correctly mine were deerskin, made by a company in New Hampshire or Vermont. They were heavy. Very impressive when you dropped them onto the counter at the coffee shop. And equally embarrassing when you then whacked your teeth with the (by comparison) featherweight coffee cup.