◆ Sponge holder that suppresses stuffiness. This is a water-related product that suppresses mold and mildew with a plated finish. This product is a product with SIAA mark of the Antimicrobial Product Technology Council. Copper products are resistant to stuffiness, but they will corrode quickly. Our anti-microbial plating is as much as copper products and is rust resistant than copper. Suction cups are not subjected to SIAA and antibacterial processing.