Even more puncture protection and grip for Schwalbe's G-ONE Overland PRO A versatile tread and extreme durability â the G-ONE Overland PRO is now available with enhanced puncture protection and even more grip. The basis for this is Schwalbe's proven Double Defence construction: Continuous Snakeskin fabric, together with the RaceGuard insert, provides puncture protection and high resistance â you can feel this both on asphalt and off-road In addition, a dual compound, two different rubber mixtures, ensures even better performance â the grippier compound is placed on the sides of the tread, giving you even more grip in cornering.Â