I'm 6'2" 175lbs, 40" chest, 31" waist. I bought a large and it fits perfect. This is the fourth LG item I have purchased and the quality has been excellent on everything. This is a really nice jersey and dirt cheap. I am really picky about my cycling clothes and I just wish I could get a black one too. As always, RC had it at my door in 3 days. I've placed 6 orders with RC now and they are without a doubt the best online store I have ever dealt with. I forgot to select free shipping on one of my orders. I sent them an email and the refunded the shipping within 10 minutes. You guys are great!!!!!!!!!!!