LIGHTWEIGHT SUPPORT. VERSATILE TRACTION.The Nike Air Max Effort TR Men's Training Shoe features a Max Air unit in the heel and a multi-surface tread to give you premium impact protection and traction during a variety of workouts.BenefitsSynthetic leather and mesh upper provides support and breathabilityFlywire technology in the midfoot wraps the arch for a locked-down fitMax Air heel unit provides cushioning and impact protectionRubber outsole with multi-surface tread for durable, versatile tractionNike Air Max OriginsNike's revolutionary Air-Sole unit made its way into Nike footwear in the late '70s. In 1987, the Nike Air Max 1 debuted with visible air in its heel, allowing fans more than just the feel of Air-Sole comfort—suddenly they could see it. Since then, next-generation Nike Air Max shoes have become a hit with athletes and collectors by offering striking color combinations and reliable, lightweight cushioning.