Who Invented It: Liverpool Rubber Company
Year Introduced: 1830s

Developed as beachwear by the Liverpool Rubber Company, the canvas/rubber sneaker was dubbed the "plimsoll" after a ship's Plimsoll line—where the hull of a ship meets the surface of the water. Like a boat, anything above the rubber "Plimsoll line" would get wet. Later on, the Liverpool Rubber Company would be acquired by Dunlop, who would go on to make its own sneakers in the 1920s. Without these, you wouldn't have Chucks, Vans, or any other shoe that combines canvas with rubber.