adidas - BadPak GTS (Chocolate/Black/True Red) - Men's: Ground control technology in a waterproof lightweight hiking boot for all trail pursuits. Waterproof full-grain leather and suede upper. GORE-TEX booties construction. Agion EVA molded sockliner. LightStrike III EVA integrated TorSion support. High traction rubber. LightStrike(tm) EVA an exclusive EVA compound used in running and tennis products that provides additional lightweight cushioning 15% lightweight and 10% more durable than traditional EVA. TorSion(R) System creates stability and control. Allows natural rotation between the rear foot and the forefoot, provides midfoot support and improves surface adaptability. Ground Control System Terrain the freely moving internal plates and midsole of the Ground Control System for off-road footwear can move in any direction to adapt to uneven surfaces.