The Volt is the lightest boot in the Concave range, making it the perfect choice for speed. This model gives you an affordable entry in to this Concave silo. With the PowerStrike technology sitting at the top of the laces, this boot is hands down the most powerful speed boot on the market. The synthetic upper gives you a snug, and close to the ball feel. The lightweight TPU firm ground outsole provides you with traction, support and the perfect amount of energy return which is vital in a speed boot. Inside the Volt is a built in sock liner, providing fantastic comfort.