They are brushes they clean stuff . They do it well if paired with the cleaner liquid and warm water . It also works with cold water but warm water is faster
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Boot Buddy 3.0 Black Very good, tryed it after hiking on the hills, shoes came up clean with not much effort. Boot buddy is a permanent addition to my rucksack.
Great selection for that more stubborn mud on my walking boots to the delicate leathers on my trainers and boots.