Design Engineered mesh upper improves airflow, keeping your feet cool and comfortable In-Shoe Comfort FLYTEFOAM(TM) cushioning is paired with GEL(R) technology to provide a soft feel underfoot Rearfoot GEL(R) technology improves impact absorption and creates a softer feeling at footstrike Durability & Traction AHARPLUS(TM) heel plug rubber helps improve durability Additional Details 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 Surface: Road Heel Drop: 8 mm Weight: 240 g (8.5 oz)