【texture】bamboo charcoal, cotton cloth , flax , non woven
【color】grey ,green  
【specification】35-45size
【function】remove odor and humidity ,kill bacteria， prevent beriberi， make your feet dry and comfortable
【application 】suitable for household , hotel , and cantonment, improve personal  life quality.
【usage】 after entering the door, and taking off shoes , put one bag into shoes for one night in the vent , then take out the next morning, insole it once every week .