The lock laces odor drops are premium sneaker deodorant balls for eliminating odor - perfect for sneakers, athletic bags, and gym lockers.Its spherical design makes it easy to activate and insert the deodorant balls into any pair of shoes. Simply twist the two hemispheres to unlock the vents and drop them in your smelly sneakers. It's that simple! When you’re finished, simply twist the vents closed and store in the lock laces odor drops packaging tube to preserve freshness. The lock laces odor drops can last up to 1 year, depending on the frequency of use. the lock laces odor drops are great for all ages, genders, and shoe sizes. They come in a 6-pack, great for freshening 3 pairs of shoes at once. Each packaging comes with 6 green balls and each ball is 1.5 inches in diameter