Although I was working without noticing it was pretty sweat dirt started to stand out, so I bought it including washing spare. I recommend washing at about one week. You will not be able to remove dirt.
Agohimo of the helmet of a supply from company is growing and it is dirty, purchased. Speaking of general affairs, Agohimo will pay, but it is troublesome to write a document, because it is not a translated translation, so check the manufacturer and buy it. This is a good item that the reinforcement of the ago thimo.