The Mieco Travel Tube Toothbrush Holder is designed to fit not only our bamboo toothbrushes but this one will also fit most PLASTIC toothbrushes. As you can see by the photo above it is a round holder with a slip on lid – there is a hole drilled in both the lid and the bottom of the tube to allow air flow for the toothbrush to dry to reduce bacteria. SIZE: 21cm long x 2.6cm diameter.