Product Information SKU: #8523171Go the extra mile. Take the tough route . . . The dynamic, supportive ASICS? Gel-Fortitude? 7 is ready to carry you from mile one and beyond . . . Its responsive, plush nature makes it a potential fit for the larger-framed neutral runner.Breathable mesh and durable synthetic uppers.Lace-up closure. Padded tongue and collar.Breathable fabric lining.Removable ComforDry™ insole features anti-odor properties for a drier, fresher feel.I.G.S? (Impact Guidance System) employs linked componentry to boost the foot's natural gait from heel strike through toe-off.Rearfoot and Forefoot Gel? systems work together to reduce impacting shock and allow movement in multiple planes from heel strike through toe-off.SpEVA? midsole maximizes energy return and reduces midsole breakdown.Midsole Height: Heel/Toe: 21 mm/11 mm Differential: 10 mmGuidance Trusstic System? increases gait efficiency, while maintaining mid-foot structural integrity.Guidance Line? technology employs a vertical flex groove that decouples the tooling along the line of progression for maximum stride efficiency.DuraSponge? material in the forefoot delivers cushioning and long-lasting wear.Heardwearing AHAR? (ASICS High Abrasion Rubber) is strategically-placed throughout high-wear areas of the outsole.Maximum Support last offers more depth and width throughout the mid-foot and forefoot, making it ideal for runners with higher volume feet or who wear orthotics.Imported. Product measurements were taken using size 8, width B - Medium. Please note that measurements may vary by size.Weight of footwear is based on a single item, not a pair.Measurements: Weight: 12 oz