Design: Engineered mesh upper improves breathability GUIDESOLE(TM) technology helps create smooth toe-offs and advanced energy savings Heel pull loop for ease of entry In-Shoe Comfort: FF BLAST(TM) MAX cushioning combines incredible softness and responsive energy return OrthoLite(TM) X-55 sockliner provides step-in comfort FF BLAST(TM) PLUS ECO is formed with at least 20% bio-based materials from renewable sources Durability & Traction: AHARPLUS(TM) outsole improves durability Hybrid ASICSGRIP(TM) is designed to improve grip for surefooted traction Additional Details: Weight: 290g / 10.2oz Heel Drop: 6 mm