The top fits ONE FULL SiZE SMALL - so, please size up accordingly. Eg., if you are normally a size Small - you need a size Medium in this top.
Our new Aero Short Sleeve Triathlon Top is the bomb. We use this for racing and training - its super comfortable for both and crazy aero.
Size UP one full size - i.e., if you normally wear a Small top - then you need a MEDIUM size.