When castelli developed the sanremo speedsuit they did it with a singular focus on improving aerodynamics for worldtour level pro racing they achieved that goal but in the process they made one of the most comfortable pieces for cycling by eliminating the bib straps and letting the jersey do the work of holding up the shorts now castelli have brought the sanremo technology into a mid level product that maximizes comfort without worrying so much about aerodynamics the short portion is their