At a mere 150 grams, the S-Works EXOS are the lightest cycling shoes to ever come with a Boa® dial. And not only are they ridiculously light, but they still have all the features that are synonymous with the S-Works label. They’re still at that World Tour level, just ridiculously light. To get the weight down to the 150-gram mark without sacrificing power transfer, we implemented all the engineering bells and whistles we could think of. And when that wasn’t enough, we thought up some more. The carbon outsole was developed using an advanced form of Finite Element Analysis and pressure mapping to pull out material where it wasn’t needed. This allowed us to keep crazy-high stiffness numbers, too. For the uppers, we completely removed the heel counter. And with a little help from the space-grade Dyneema® mesh and some CubicTec reinforcement, the heel molds to the back of your foot, so nary a watt is wasted. Lastly, we developed a new Warp Sleeve vamp that let us get rid of the toe box, and this further cut down the weight and increased the comfort. Of course we couldn't do any of the above without including our coveted Body Geometry features, like the Longitudinal Arch, Varus Wedge, and Metatarsal Button. Each one of these features have been ergonomically designed and scientifically tested to not only boost power, but to also increase efficiency and to reduce the risk of injury. The S-Works EXOS are the lightest cycling shoes to ever have a Boa® dial.