The LCS Economy Bumper is the lowest price you will find on firm, injection-molded rubber dog training bumpers that can be used on land or in water. These are the bumpers recommended and used by professional retriever trainers, as they discourage hard-mouthing. The colors each have their own purpose: with white being easily visible to dogs making it perfect for beginners, the black/white alternating colors draws the dog’s attention in air and is also easier to find, where orange is difficult for a dog to see so it challenges a more advanced dog’s marking abilities. Comes in regular 2 in. x 11 in. chukar/teal size, or large 3 in. x 11 in. pheasant/duck size. Please specify color and size when ordering.