Not too rough and not too soft? Then go for a medium bristle. One toothbrush should last you three months, the recommended time to change your brush.
Our toothbrush handle is made of 100% biodegradable Mao bamboo from the Zhejiang Province. The bamboo is carbonised giving it a quality finish, longer life, water resistance and preventing the growth of microbes (bacteria and moulds) during normal use. The brush uses a medium bristle made from Nylon.