Sneaker balls are easy-to-use deodorizers that help keep your shoes, gym bags, lockers and closets smelling fresh. Sizes and shaped to fit in small spaces where other fresheners wont fit. Sneaker Balls are an essential foot care accessory. they feature a quick-twist action which opens vents to release a specifically formulated fresh and clean scent. Preserve the freshness and life of your Sneaker Balls by twisting them to close the vents when not in use.