The Nivia SPIRIT spikes offers a lightweight feel and locked in support with mesh and tpu film fusing .A tpu plate provides stability with seven removeable spikes offer custon traction for multiple distances events.This shoe is ideal for sprinters, short distances & hurdles events.(100mtr. to 400mtr.) Mesh upper with tpu film for breathability and lightweight comfort. Eva sockliner comforms to the shape of your foot for comfort and support. Tpu plate with seven removable spikes receptacles for maximum power, speed and traction. Solid rubber through the heel with a pyramid shaped traction pattern enhances grip and durability. Windows cuts in the vamp part provide flexibility and enhanced airflow. Spike plate extends under the arch for midfoot response and support