Engineered for maximum cushioning and protection, the Guide 19 delivers everyday comfort with a refined blend of PWRRUN foam, enhanced forefoot flexibility, and added durability. Feel steady and confident in every step.PWRRUN cushioning softens every step and gives back bounce, keeping runs supported and comfortable from start to finish.Sidewalls guide your foot for balanced support, without feeling stiff—helping you stay in control mile after mile.A flexible mesh upper stretches with your stride, keeping the fit secure and comfortable all day.