eS - K7 (White/Gum) - Men's: Eric Koston signature pro model. Leather, synthetic and suede upper materials. Double-stitched ollie area and toe cap. Padded tongue and collar for comfort. Lightweight and supportive strobel construction. System C2(tm) heel cushioning gel insert. Full-length internal EVA midsole. STI Foam(tm) Level 2 footbed cushioning system with integrated heel counter for stability. 400 NBS rubber outsole.