The Doc Blue makes your tire resistant to nails, thorns, glass, etc. and is even better suited for tubeless conversation and for repair or as preventive puncture protection. The milk is distributed evenly on the inside of the tube/tire by rotation and thus forms a protective layer. If the tire/tube is punctured, the latex milk immediately seals the hole and prevents air from escaping. Doc Blue is not suitable for major defects such as cuts or bursts and is suitable for use with tubeless systems as well as normal tube/tire combinations.