When the temps rise beyond past 110Adeg F, the A.T.A.C. 2.0 8 Arid boot won't notice a thing. Its suede and 840D nylon upper breathes and provides outstanding support. The boot lining is finished with Agion antimicrobial treatment for odor control. Full-length dual durometer Ortholite footbed works to keep your feet cool, dry, and comfortable all day every day. Another addition, the Achilles heel flex zone, gives a critical part of your foot more range of motion without compromising support and stability. Shop the A.T.A.C. 2.0 Collection. FEATURES: Lighter weight upper construction New full-length dual durometer Ortholite footbed New + Achilles flex zone for more comfort & flexibility Agion antimicrobial treatment on lining Outsole toe stitched to upper for durability Shock Mitigation System Slip- & oil-resistant outsole Strobel construction for more comfort New Ortholite ankle zone for more comfort & heel lock