GEL technology: Shock-attenuating material placed in the midsole of the shoe for cushioning and shock absorption. Engineered mesh upper: A lightweight, breathable mesh material helps reduce the need for additional overlays.  AMPLIFOAM technology: Midsole cushioning that provides a soft and comfortable ride. 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. Vegan Friendly: For this product, no materials of animal origin are applied in the design and material selection stages, including: the yarns, glues or other adhesives applied in the product. *The product is not certified as vegan by an independent third party.