adidas - Trifonic Synthetic (Black/White/Metallic Black/University Red) - Men's: Heavy duty indoor trainer provides an extremely stable platform for lifting while unique forefoot technology in the upper specifically helps prevent ankle roll. Synthetic leather for excellent fit and support. Textile lining. EVA insole for comfort. Injected EVA for long-term lightweight cushioning. adiPRENE insert for comfort and shock absorption. Multi-directional pattern outsole for maximum traction. Non-marking rubber outsole.