When the trail or the road is hot enough to fry an egg on, you need hyperventilation for your feet. Moab Ventilator is like air conditioning. Uppers are Dura leather with lots of exposed breathable Ventilator mesh. Breathable mesh linings and bellow tongue. Rubber toe bumper and heel counter, and Vibram Multi Sport Plus sole provide the protection, support and traction you need when the action heats up.Merrell Moab Ventilator Shoe Features: Slip Lasted Construction Dura LeatherBreathable Ventilator Mesh Upper Breathable Mesh Lining Breathable Ventilator Bellows Tongue Rubber Toe BumperHeel Counter 7.5mm Narrow Gauge Webbing 4.5mm Anatomical Footbed Nylon 6.6 Injection Molded Arch Shank Compression Molded EVA Footframe Air Cushion Midsole 5mm Sole Lug Depth Merrell Multi Sport SoleTC5 Rubber Men's Weight: 1 lb. 8 ozs.