Ambulatory: the cap of Gum Proxabrush Travel is used as a handle to better reach the posterior zones. Small and practical, this ambulatory brush is ready to use. Ideal in travel.Antibacterial protection: The brushes are protected by an antibacterial active ingredient, Chlorhexidin, which inhibates the bacterial growth on the brushes, up to 2 weeks.With ventilation, the cap protects the brush whilst allowing it to dry.Available on our website in 8 versions:- Ultrathin cylindrical Ref 1314: complies with the ISO 1 standard for a 0.8 mm diameter interdental space, colour code: red..- Ultrathin cylindrical Ref 1412: complies to the ISO 2 norm for a 0.9 mm diameter interdental space, colour code: orange.- Ultrathin conical: conform to the ISO 3 standard for a 1,1 mm diameter, colour code green.- Extrathin cylindrical Ref 1512: conform to the ISO 3 standard for a 1,2 mm diameter interdental space, colour code: purple.- Extrathin conical Ref 1514: conform to the ISO 4 standard for a 1,3 mm diameter interdental space, colour code: yellow.- Thin cylindrical Ref 1612: conform to the ISO 4 standard for a 1,4 diameter interdental space, coulour code: bordeaux.- Thin conical: conform to the ISO 5 standard for a 1,6 mm diameter interdental space, colour code: blue.- Cylindrical Ref 1618: Conform to the ISO 6 interdental space for a 2,0 mm diameter interdental space, colour code: grey.