Design: Soft engineered knit upper comfortably wraps your foot while supplying advanced ventilation Knit collar and midfoot fit help provide a comfortable feel Reflective details improve visibility in low-light conditions In-Shoe Comfort: FF BLAST(TM) PLUS ECO cushioning creates a lighter and softer cushioning experience with less of an impact on the environment PureGEL(R) technology helps provide lightweight cushioning and softer landings OrthoLite(TM) X-55 sockliner improves step-in comfort Durability & Traction: Hybrid ASICS(R)GRIP(TM) outsole rubber helps create better traction, improved softness, and advanced durability Additional Details: Weight: 10.8 oz / 305g (based on size 9) Total Heel Height: 42mm Total Forefoot Height: 34mm 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