Men's Structure 26 Size:13 the GTS 21 offers a

the GTS 21 offers a slightly softer and more responsive ride

Soothes tired feet and sore arches

or those who prefer a softer underfoot feel

FootShape    Standard

but the shorties out there truly know the unique advantages riding in the middle offers: a direct line from the AC vents in the car

Men's Structure 26 Size:13 the GTS 21 offers aThe Structure line has long been Nikes stab at a stability guidance trainer. The 26 marks a significant update: It uses a full length ReactX foam midsole (no more Zoom Air in the forefoot) for cushioning and energy return. It includes a Midfoot Support System that provides structure around the arch and heel to limit excessive motion. The outsole has high abrasion rubber in the heel and a lighter blown rubber in the forefoot for better transition