Since a special antibacterial agent is kneaded, even if E. coli, Staphylococcus aureus, Salmonella, etc. adhere, it suppresses the growth with semi-permanent antibacterial power. Although it is light, it has outstanding durability that does not warp easily, and it drains well in water, so it is easy to clean. It has a heat-resistant temperature of 130°C and is dishwasher safe, so it is hygienic.