GROUNDFORCE 4 - our answer to CAT Footwear’s challenge of naming and launching a new line of work boots. CAT knows that with any large project, there are strength in numbers. This is why they have combined 4, highly effective technologies to create a boot that is lighter, more flexible, more comfortable and waterproof. When you wear boots from the GROUNDFORCE 4® collection, you’re protected from the day’s harsh conditions and there is less wear on your feet when the the work is over. These aren’t just work boots. These are boots that work.