Style#: DZ2616-300The lace lock system attaches to the shoe tongue, so you don’t have to worry about latching it to any fabric. It helps keep your laces in place, so once you tie up, you can focus solely on your workout.We extended the rubber wrap on the side for durability and support, so that you can scale any kind of rope climb with the same repeated velocity without worrying about wear and tear. It stretches from the midsole to the upper and adds some support in the upper for multidirectional movements.Lightweight, breathable mesh helps keep your foot cool yet sports the kind of durability that can withstand scrapes, slashes and quick-drag movements.Dual-density midsole?firm foam on the outside, soft foam on the inside?provides responsive cushioning for lasting comfort for continuous cardio and movements.