Construction and Materials used on the New Tactical Research Boots allow for Rugged Use and Long Lasting Comfort. Exclusive TR-1 High Performance Insole: Deep Contoured Heel Cup for Stabilization, Extended Arch Supports, Honeycomb Forefoot Design, for Maximum Air Circulation, High-tech EVA/Rubber Blend Cushions Heel and Mid Foot, Agion Treated Anti-baterical Sock Liner