OrthoLite Replacement Insoles breathe new life into your old boots, restoring them to the comfort, support, and utility levels you require. The insoles feature triple-density support for durability and all-day comfort, plus moisture-wicking construction to keep you cool, dry, and focused. They integrate quickly with our Shock Mitigation System for enhanced agility and traction, meaning you'll be ready for duty in no time. Material: Polyurethane.