The newly revamped Asics GT-1000 5 running shoe is now better than ever. An improved mesh upper allows for enhanced breathability and the I.G.S® and DuoMax® support system continues to provide runners with excellent stability. Now runners with a neutral gait and even mild to moderate over pronation can enjoy training in a model that's even lighter than before. Upper: Padded tongue and heel collar enhance comfort. Lace-up front offers an adjustable fit. Synthetic overlays offer lightweight support. Mesh provides breathable flexibility. Midsole: Impact Guidance System (I.G.S®) employs linked componentry to enhance the foot's natural gait form heel strike to toe-off. Rearfoot and Forefoot GEL® Cushioning Systems attenuate shock during impact and toe-off phases, and allows movement in multiple planes as the foot transitions through the gait cycle. SpEVA® Midsole Material improves bounce-back characteristics and decreases midsole breakdown. DuoMax® Support System is a dual-density midsole system positioned to enhance support and stability, positioned sport-specifically. Guidance Trusstic System® integrates Guidance Line® construction for enhanced gait efficiency while providing midfoot structural integrity.Outsole: Guidance Line® vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency. AHAR® (ASICS High Abrasion Rubber) is placed in critical areas of the outsole for exceptional durability.