Our insoles are fine quality with good sweat absorption, aeration, itching relief,sterilization and deodorization. It's scientifically formulated from de-odorant environment-friendly materials and rare Chinese medicinal herbs. It's effective to remove foot odor quickly and help you free from trouble of foot mell. It's has no side effect. 1)For user with sweaty foot, please take out the insole for drying,before sleep. 2)Better to prepare another pairs for exchanging in use. 3)Allow washing by scrubing;no washing by rubbing or machine;dry in air. 1.Factory information:we have 10yearsmade business with the 20manufacters in shaoxing keqiao china.