4D GUIDANCE SYSTEM™ technology helps create adaptive stability for a more balanced stride ; Rearfoot PureGEL technology helps you take a smoother stride with lightweight cushioning ; FF BLAST PLUS ECO cushioning is made with approximately 20% bio-based content ; Helps provide cloud-soft comfort ; Features an OrthoLite X-55 sockliner for added comfort with every step ; Features an ASICSGRIP rubber outsole for excellent traction ; Reflective details help increase visibility in low-light conditions ; Engineered mesh upper enhances breathability; Pull tab on the heel for easy on/off ; The sockliner is produced using a solution-dye process that reduces water usage by approximately 33% and carbon emissions by approximately 45% compared to traditional dyeing technology ;