About this item Engineered knit upper: Wraps the foot with a soft feel while improving breathability At least 75% 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: PureGEL technology: Helps provide lightweight cushioning and softer landings FF BLAST ECO PLUS technology: Cushioning creates a softer landing and a more responsive toe-off