Pearl Izumi is out to change how we think about lightweight, performance cycling shoes, and the Pro Air Cycling Shoe is worth considerable attention from any racer who weighs out components on a kitchen scale. Think about how excited we are when we see the speed gun light up to the pitcher's throw at over 100 miles per hour. It's thrilling, and it fills us with awe. The Pro Air comes in at 150 grams -- for the size 42 -- making it about the weight of a pro baseball and lighter than comparable carbon road shoes at a similar price.Pearl Izumi developed the Pro Air with Ruckus Composites, a carbon repair brand out of Portland, Oregon, to maintain the stiffness of the predecessor, Pro Road V5, while reducing weight to virtually nothing. A mesh laminate upper and ventilated sole make up significant weight loss. Simultaneously, the lace-up design removes the structure of dials and cinch points, cleaning up the shoes' visuals and simplifying the design. We can't wait to lace-up, clip-in, and ride-on.