The Fresh Foam X midsole foam, comprising about 3% bio-based materials, provides an exceptionally comfortable Fresh Foam experience. The bio-based content is derived from renewable resources, contributing to the reduction of our carbon footprint. The upper is constructed with engineered mesh. Please note that the 4 mm drop may vary slightly due to variations in the development and manufacturing processes. Rest assured, every detail of these shoes is designed to offer 100% comfort.