With the Enforce X High, lightweight and comfort go hand in hand. With a roomy toe box, 2-zone lacing for a custom fit, and a cushioned, shock-absorbing sole, this boot offers an extra spring to your step. The climate system in the Enforce X High continuously circulates airflow throughout the boot. As Fresh air comes in, moist air pumps out through the vent holes at the top of the boot, keeping your feet from overheating The lightweight, streamlined design of the Enforce X High makes for an easier day with less fatigue to your legs and feet. 12 hour days? No problem. HAIX insoles support your feet in ways you might not think of. They not only provide extra support and distribute weight more evenly, but they also reduce pressure points, especially in the heel and ball of the foot. The microfiber design also helps wick moisture away from the feet, keeping them drier and more comfortable. Machine washable.