Nike Air Max Alpha Trainer Men’s Training Shoe features a mix of mesh and skins in the upper for stability and support. Its solid rubber outsole provides excellent grip, while a Max Air unit in the heel Flywire technology wraps the midfoot for support. Max Air unit in the heel provides lightweight cushioning. Full rubber outsole for enhanced grip. Skins at the toe help provide durable support. Rubber wraps up from the outsole onto the medial and lateral sides to help resist abrasion.