This shoe features a FuelCell midsole foam with approximately 3% bio-based content for a propulsive feel. It includes Energy Arc technology with a sport-specific carbon fiber plate geometry and strategic midsole voids designed to increase stored energy and energy return. The angular midsole design reduces weight, and the outsole is designed for superior traction. It has a soft, plush mesh upper for breathability and comfort, weighs 212 grams or 7.5 ounces, does not contain pig skin leather, and fits as expected for most people.