The Oko puncture free sealant is the best all purpose flat tyer preventer. Designed to be squeezed into your bike tube, so that when you get a puncture, the sealant oozes out and seals the hole, so you can pump your tyre up and keep riding.

Seals holes up to 3.2mm
• Works on multiple punctures
• Lasts the life of the tyre
• Suitable for all bike types
• Ideal for full tubeless conversions
• Not latex-based
• Much longer effective life
• Combats larger punctures
• Seals multiple holes
• Contains corrosion inhibitors
• Water-soluble
• Non Hazardous.