The PEET Power Cell travels everywhere and dries and warms all types of footwear. Eliminates odors caused by perspiration and bacteria. Removes contaminants like viruses and mold that can cause skin irritation and deterioration of materials. Extends the life of footwear and gear. It is ideal for all types of materials including leather, PVC, rubber, neoprene, canvas, synthetics, cloth, fleece, felt, micro and all modern fabrics. Safe silent operation.