Ladder Mitts are tough, flexible urethane pads that keep ladder rails from damaging support surfaces such as wood, aluminum, vinyl siding, sheetrock, and glass. Ladder Mitts are durable enough to last the life of the ladder, and carry a lifetime replacement warranty against tearing when used as intended. They are molded in one piece so there are no seams to tear. Ladder Mitts fit the four most popular fiberglass and aluminum extension ladder sizes: Type IA (Heavy duty industrial), Type I (Industrial), Type II (Commercial), and Type III (Household). They are not designed to fit Type IAA (Extra heavy duty industrial), or specialty ladders such as folding, articulating, or telescoping models.