ASICS Men's GEL-Flux Running Shoe 100% Manmade Imported Rubber sole Shaft measures approximately 2.84" from arch Designed to cushion under- to mild over-pronation Rearfoot and forefoot GEL-cushioning systems SpEVA midsole improves bounce-back Guidance Line vertical flex groove Guidance Trusstic System enhances gait efficiency With ample breathability and a bouncy, cushioned ride this flexible road-runner is built to go the distance.