Schwalbe Winter Spiked Tire (HS 396) - Free Valve Cap Upgrade Worth $4.99! THE WINTER - Versatile spiked grip without compromising performance and speed FREE METAL VALVE CAPS - 3x Higher air retention over standard caps SKYSCAPE CAPS WORTH $4.99 FREE - Presta style (Schrader available by request/email at the time of your order)