How do I avoid chaffing when cycling and running in wet kit?
You can’t use Vaseline because petroleum based lubricants will rot your wetsuit or the rubber grips on the legs of your cycling shorts. KY jelly or baby oil are better alternatives. A blob of lubricant under the saddle of your bike makes a good emergency supply. On nipples you can use micropore tape (from chemists) which will not come off in the water. Don’t forget that you can get chaffing around the neck of your wet suit. People variously swear by baby oil, KY jelly or cocoa butter.