Originally Posted by bbattle
They run small, like most European clothes makers. So if you take a medium in PI, you'll need a large to extra large in Assos.
I have both PI Microsensor shorts and the ASSOS H FI Mille Half Short. The PI is medium, the Assos is size Large. The Large Assos fits a bit tighter than the Med PI. Also the Legs are shorter in the Assos, but the waist is higher (in the back), the Assos is designed for tall people. I'm 160 lbs, 5'7" so height wise they are as big as I'd want them to be. The lower cut front is a nice touch.
There are other issues with Assos too. The EIT chamois is great in century rides but a bit much if you're just going out for an hour or two. Also they need lots of TLC, i.e. roll them on and off like women do with pantyhose or the chamois will tear loose. But the Assos is great when you need them.