The design of these spikes is inspired by the professional Zoom Rival D V spikes. They are suitable for running on a treadmill at distances from 400 to 10,000 meters, but are primarily intended for longer distances (3,000-10,000m).UpperThe two-piece construction, consisting primarily of mesh, reduces the risk of abrasions and provides adequate foot ventilation and comfort while running.Additional TPU layers provide better fit to the foot and additional stability while running while maintaining the low weight of the shoe.MidsoleThe part adjacent to the foot is made of thin EVA foam that adapts to the shape of the foot, providing the necessary cushioning and protection while running while maintaining the low weight of the shoe.OutsoleSix replaceable screws are placed in a newly designed durable Pebax layer. They allow for maximum grip during push-off.For increased durability, 3/4 of the outsole is made of abrasion-resistant rubber.