1Made of high quality PU material, which is soft, shock absorbing, durable and comfortable. 2Breathable mesh design, good circulation of air currents, making your feet feel cool and comfortable. 34 layers for you to adjust height, different layers correspond to different heights. 4U-shaped shock absorbing design, relieves your heel pressure. 5Sweat-absorbent insoles won't cause foot odor, it can be tailored according to your needs.