Nano Bamboo Fiber (NBCF) is a special fiber with many great health benefits. It releases Far Infrared Rays that are believed to help promote blood circulation and increase Anion production. NBCF is also a natural deodorizer and can absorb and decompose benzene, phenol, methanol, sulfides, nitrides, etc. It helps reduce odors from NH3 gas, adjust for moisture, release Anions and restrain microbial growth. Another great benefit of NBCF is its ability to regulate skin temperature, keeping your feet cooler in the summer and warmer in the winter. NBCF is also environment friendly, as no chemicals are required for this product to have such wonderful properties.