Don't stress about bacteria, as our stainless steel straw brush ensures you can clean out your Bubble Tea Straws perfectly. The brush can also be used to clean out most sippy cup spouts and drink bottle straws. It is made of stainless steel with nylon bristles and is approximately 20cm long. It measures 0.5cm W x 20cm H x 0.5cm D Our Bubble Tea Straws (set of 3) comes with a straw brush included, but this brush could be used as a replacement or in case you want an extra around.