PolyU Foam for Insole: 1)High density, hard 2)Antibacterial, odor-free 3)Wear-resistant,breathable ... FOOT-YOU( or POLY-U) series insole materials of our company which combine the foam angle material and secondary foaming material is ... Extension rate (%)55↑Compression proportion (%)15↓3.Feature: wear resistent, quality-assured, anti-bacterial, ventilated, environment friendly, comfortable.4.According to ...