Nike Air Max Alpha Trainer 4 。This model is designed specifically as a performance training and gymnastics shoe. Key features include: Stability: A flat, wide base paired with a redesigned heel featuring supportive padding to handle heavier lifting sets. Traction: The durable rubber outsole wraps up the sidewalls for added grip during explosive or lateral movements. Comfort: Utilizes Nike Air cushioning in the midsole to reduce shock and provide comfort during workouts. Construction: A breathable mesh upper reinforced with durable outer layers for gym use. No rips or issues. Lightly worn. In good repair. No original box Fast Shipping.