Potholes, Glass, Nails, Screws and other debris along the way are liable to cause a puncture. Even without a puncture, tyres are porous and naturally lose up to 0,3 bar of airpressure each month from porosity leaks.
Ride-On TPS  puncture sealant is a gel-like substance containing fibers, 6 times stronger than steel which forms a coating on the inside of the tire. The protective coating not only makes your tires virtually puncture proof, but also continuously balanced, the rest of the life.