LaCrosse ATSIf you find your boots covered with mud at the end of every day, perhaps you need some additional coverage. The ATS is a boot for your boot. These are designed to fit over deep heel leather footwear to take charge of the job. Firm, durable support comes from a ZXT rubber compound that provides extreme tear and abrasion resistance with steel buckles that lock in a snug fit. ATS soles use a combination of metal studs and hard rubber to allow for unbeatable traction on soft or hard grounds, indoor and outdoor.