adidas Kakari Soft Ground Boots unisex Domination in the forward line is about more than just brute force. That\\\'s why adidas made these Kakari rugby boots sleeker and lighter than their predecessors. Spot the gap and break the line in the blink of an eye, locked in by a durable synthetic leather upper. The 8-stud outsole gives you all the traction you need to dictate play on soft ground. Lace closure. Synthetic leather upper. Stable, lightweight feel. Soft ground rugby boots.