Brand from Japan: EBISU. Each brush comes with a cap, ensuring hygiene before and after use and convenient storage and portability.The handle can also be extended with the cap, making it easier to reach between back teeth and into the gaps.The hexagonal handle fits comfortably in your fingers, making it easy to control the direction and angle, and maneuver.It prevents missed spots and helps prevent cavities and periodontal disease (a collective term for periodontitis and gingivitis).The slim (S) size is perfect for those with minimal gum recession and slightly visible gaps.How to use:Insert the brush slowly and straight into the spaces between your teeth, moving it back and forth several times to remove plaque.Do not rotate the brush.When using on back teeth, bend the neck.Replace the brush when the bristles become damaged or the wire becomes easily bent.