etnies - Tribune (White/Grey/Black) - Men's: The Tribune dont miss out on this awesome shoe!; Suede or action leather upper. Molded TPR quarter underlay providing shoe stability and protection. Triple lacing system offering varying options of lace protection. Padded tongue and collar. Strobel construction for ultimate fit. Lightweight polyurethane midsole. STI Foam level 2 cushioning footbed with heel support. System G20 Dual stage system G2 integrated into heel and air bag. System FLO high air flow breathable tongue. System G2 - was exclusively developed and tested by STI (Sole Technology Institute). This technologically advanced shock absorbing system is the latest and most effective available today. System FLO - after extensive testing, STI has developed the perfect combination of mesh and foam to created System FLO. A highly breathable tongue design that allows air to flow much more easily into the shoe, thus keeping your feet much cooler.