I originally bought an 18 but sold it after a month to go up to a 19. Although the 18 is probably the correct fit for me, I prefer more room. I don't regret going up a size at all. Have you even tried a smaller size? You may not like it.Thanks for letting me know about your friends -- as I'm now stuck with the size 17 it does make me feel better knowing some successfully have a looser fit! Will give it a good go and try and get used to them before selling them if they don't work out! The Heathrow SA advised me to wear a sweatband around them when working out to avoid friction, your friend may prefer that option rather than a terry cloth!! Think you made the right decision with 16 but it does make your JUC choice more difficult. If the 16 fits fairly snugly than 15 may be too tight. Will upload a pic of JUC in 16 on my wrist tomorrow for you to View if that helps?