The Men"s Flame GTX Hiking Boot by Asolo uses a blend of water-resistant suede and high-tenacity nylon to withstand all the abuses of a season in the backcountry. If any moisture manages to get through the tough exterior, it"s stopped cold by the waterproof breathable Gore-Tex insert. Asolo used a Matrix sole with Active Heel Support to make the Flame GTX Hiking Boot a solid choice when you have to carry a lot of gear or travel on rough terrain. - 1.6-1.8 mm water resistant suede upper with high tenacity nylon mesh- GORE-TEX Sierra lining for moisture wicking and breathability- Asoflex 00 SR lasting board- Lite 2 anatomic footbed- Matrix technology - A moderately aggressive, dual-density outsole that incorporates Aso-brake for maximum downhill traction and offers superior grip on uneven terrain- Active Heel Support - "Visual technology" that"s created by externalizing the mechanism positioned in the heel zone. Optimized by the use of leading-edge materials that offer lightweight support, shock absorption, and full heel control- Shaft: 6.5"- Circumference: 13.5"- These shoes CAN NOT be exported outside of USA. - New: In Original Box