【texture】bamboo charcoal, cotton cloth/flax/ /non woven fiber
【color】brown, black
【specification】35-45size
【function】remove peculiar odor and moisture, kill bacteria, massage feet, absorb sweat to make feet dry , prevent beriberi , release far infrared ray to warm feet and improve foot microcirculation
【application】suitable for home , hotel and cantonment , can improve life quality  
【usage】when you change shoes to go out , only put it into shoes, after returning home, take it out and put it in  vent , insole it one time every week,  using two pairs in turn has better effect .