The use of certificated high quality prepreg materials allows Reptile to create masts with superior dynamic response, which means the ability that the mast has to bring back to the original shape a sail deformed by the wind in the quickest possible way. In addition to that, the special “inserted ferrule” with T900 fibres add to the mast a 20% more reflex, working and bending together with the mast. Even if, for obvious reasons, most of sailmakers declares that only the original mast can work properly on their sails, the majority of new school sails can be fitted with a constant/flex top curve mast. That also means that the majority of the new school masts can fit many different sail designs. What makes the difference is the quality of the carbon fibres used and the strength control of the production process.