WATER RESISTANT: Royal Vacuum Light is a technology from Selle Royal that makes the saddles 100% dense and 20% lighter than ordinary saddles in the same category (certainly important for a foldable bike where you do want comfort, but not the weight). ROYALGEL: Thanks to its unique three-dimensional gel structure, Royalgel guarantees the highest level of comfort. It reduces pressure peaks to just 40%. FOAM MATRIX: The open cell structure of the foam matrix ensures higher elasticity and better breathability. This creates an indestructible and comfortable saddle.