Hi-Tec - Vector (Flint Grey/Sapphire/Black) - Men's: Lightweight PU nubuc upper with breathable mesh underlay. Distinctive quarter panel heat seal overlay. Perforated tongue foam for enhanced breathability. Molded TPU heel pulltab. Soft Lycra(R) heel insert for comfort. Strobel construction for greater flexibility. Lightweight compression molded EVA midsole. Lightweight Vibram(R) rubber outsole. Removable sockliner.