Antibacterial & Anti-Mold Dual Protection In 2021, the Kamenoko Sponge was enhanced for greater hygiene and convenience. It now features a dual protection with silver-ion antibacterial agents and newly added organic anti-mold agents. Hygiene & Durability The infused antibacterial and anti-mold agents keep the sponge clean and long-lasting. Without any attached non-woven fabric, both sides of the sponge are fully usable with no risk of peeling. Excellent Drainage Made from slightly coarse polyurethane, the sponge offers superior water and foam drainage, preventing hydrolysis and extending its lifespan. Comfortable Thickness With a thickness of 27mm, the Kamenoko Sponge provides a comfortable grip. Specifications Size: 7cm (W) x 11cm (L) x 2.7cm (T) Material: Polyurethane, Silver-Based Inorganic Antibacterial Agent, Organic Anti-Mold Agent / Made in Japan