Design: Breathable engineered mesh upper Upper is made with recycled materials to reduce waste and carbon emissions Gender-specific 3D SPACE CONSTRUCTION™ feature addresses different compression rates Full-ground contact design creates a smoother and more efficient stride Reflective accents improve visibility in low-light conditions In-Shoe Comfort: OthroLite™ X-30 sockliner provides soft step-in comfort GEL™ technology creates softer landings and smoother transitions FLYTEFOAM™ cushioning provides lightweight impact absorption FF BLAST™ cushioning for responsive energy return Durability & Traction: ASICS® LITE outsole rubber designed to improve resistance against abrasions AHARPLUS&trade strategically placed in the heel to improve durability Additional Details: Weight: 8.8 oz (249 g) Heel Drop: 8 mm Heel Height: 23 mm Forefoot Height: 15 mm