STYLE:1266318 Upper uses light, supportive foam between two soft layers of breathable mesh. Durable leather overlays for stability that locks in your midfoot. Antimicrobial treatment applied to minimize the risk of odor causing bacteria and infectious fungus. Full-length Micro GÂ® foam turns cushioned landings into explosive takeoffs. Strategically placed rubber traction covers high impact zones for greater durability with less weight. Non-marking rubber outsole delivers greater traction with less weight.