Keeping the same toothbrush for too long is not recommended. For this reason the toothbrush comes in four distinct shapes, inspired by the four seasons. This will also help to remind you to change the toothbrush at least once per season.
The toothbrush handle is made of PLA, a biodegradable plastic, what means that it can easily decompose. The brush hairs are made of aliphatic polyester, which is also made from renewable resources, like corn starch.
The brush is made of silicon (BPA free), it has good antibacterial properties and since it is a soft material it will also not hurt the gums.