I've been searching for a new bike ever since my Cannondale was stolen about a month ago. I like the loos of this Ridley but I don't understand the sizing options performance is offering. What is "small" or "large" , and how does that compare to my 58cm Cannondale (which was just barely too big for me)?

Product: Ridley Fenix AL2 Tiagra 7005 Road Bike - 2014 Performance Exclusive