A plimsoll shoe, plimsoll or plimsole (British English; see ) is a type of athletic shoe with a canvas upper and rubber sole developed as beachwear in the 1830s by the Liverpool Rubber Company. Plimsolls had solid rubber soles about 8 or 9mm thick, to which the canvas was glued without coming up the sides (as on trainers). The effect when running was not dissimilar to running without shoes. As it was commonly used for corporal punishment in the British Commonwealth, where it was the typical gym shoe (part of the school uniform), plimsolling is also a synonym for a slippering.