The Colorado Cyclist catalog claims that a PI "Large" means waist 36" and inseam 33" and chest 42". The Performance catalog claims that "Large" is waist 36-38", inseam 33" and chest 42-44". I have had really good luck with the Performance "ultra" bibs and have found that they are on sale either in store or online about 50% of the time. I have paid 40$ for them. They last well for me and I like the chamois. Assos some day but not today. Good Luck