This seat is a cousin to the typhoon saddle and features a narrower rear width revised cutout and upgraded synthetic leather cover with the thickest padding of all ism performance saddles everyone will find comfort with the pr 10 introduced in 2011 and all about performance isms winning design allows for increased hip rotation thus decreasing a riders aerodynamic drag and opens the diaphragm for easier breathing riders report an increase in wattage due to the more aggressive position