I've been trying for a while to find a decent cycling top. I've ordered a couple from a well-known online retailer and the sizing has been way too small even after trying 2 sizes above my normal (XL) size. It's not that I'm some sort of giant - I'm 6ft tall and weigh just over 16 stone! Anyway, a google search led me to Fat Lad at the Back and I actually measured my chest to get the correct size. Ordered the top and wore it for the first time on a 30km ride last week. I'm very pleased with it, not too tight or too long and seems to be of a good quality material.