The HYPER SPEED™ 4 shoe is designed to complement your training and racing routine. This version includes a modified upper construction that's met with various customizable features. ​The shoe's engineered mesh material is designed to improve breathability so your feet can keep cool and comfortable during your run.​ Style #: 1011B874.400 UPC #: 197298487566 Tech & Materials Engineered mesh upper for breathability FLYTEFOAM® cushioning Provides lightweight impact absorption AHAR® outsole Improves durability 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