This is a Kerorin washbasin, often found in public bathhouses, that was distributed by Naigai Pharmaceutical. It's a yellow bathroom item made of polypropylene, known for its durability. I used larger ones as well, which I believe were L size, while this one is probably M size. Please refer to the size image. I've been using it for about 20 years, and it's incredibly durable. It might be a bit heavy as a result, but even women can use it without any problems, and it was very easy to use as a washbowl. I'm selling it now to declutter. I've cleaned it as thoroughly as possible, but please understand that it's a used item that has been loved for many years before purchasing. - Color: Yellow - Brand: Kerorin - Use: Bathroom item - Material: Polypropylene #Washbowl #Washbasin #PublicBathhouse #HandTowel #Showa #Retro #Vintage #Antique #Sauna #Totonou (to be refreshed) Thank you for looking.