comfortable flexibility while withstanding high shock levels. It has extra large vents for airflow, preventing overheating and reducing the risk of injuries. The USA Velcro closures are durable and double-stitched. The inner Strike Guard has a proprietary ARTi-LAGE dilatant material that is soft in its usual state but has molecule changing technology that forms an instant protective barrier when struck. The neoprene-free Bio Foam inner liner prevents heat build-up and keeps the boots fresh and sanitary.