Karhu Men's Running Shoes Flow3 Trainer Fulcrum Scream Synthetic-and-mesh manmade sole Anatomically sculpted air mesh for maximum ventilation combined with a highly abrasive and water resistant side vamp wall Gusseted tongue is anatomically mapped around the instep and features a soft touch logo top Welded eyelets and reinforced forefoot weld EVA padded lasting board Dual-pronged memory foam heel collar