Synthetic Fabric sole Breathable and lightweight Knit upper material allows your feet to breathe and ensures the lightweight feature. Stretch breathable upper expand with your foot when you run and they more comfortable closely fit to help you reduce irritation. Ventilating shoes insole which thick to keep a dry, healthy and comfort foot environment. The pattern on the bottom of sole features flexible grooves, which strengthen the shoes ability of anti-skid and grip.MD Sole: Lightweight & Excellent bounce-back & Durability. Suitable for party,sports,walking,running,indoor,outdoor,casual and trend any occasion ect.