Engineered mesh upper: Improves airflow to help your feet keep cool At least 20% of the shoe's main upper material is made with recycled content to reduce waste and carbon emissions: The sockliner is produced with the solution dyeing process that reduces water usage by approximately 33% and carbon emissions by approximately 45% compared to the conventional dyeing technology: TPU propulsion plate: Helps redirect the runner's energy forward and create a faster feel FF BLAST cushioning: Provides lightweight impact absorption and a responsive rebound. Colour: blue