Believe it or not
You may find that just a riansuit will work over your regular clothes that you normally wear. I wore a Dry Rider in R.I. to ME on one way rides non stop. Over a pair of levi's and a my Vanson leather jacket it stopped most of the fog from soaking and the wind from creating the windchill from going through my body. Before I went to the DryRider I was almost admitted to the Hospital because I couldn't get warmed up...I had to pull up to a garage post and kill the motor because I couldn't move my legs to put the kickstand down...The girls parents actually let her put me in the bathtub clothes and all to warm my body temp slowly and were there checking on us, asking me if I needed or wanted to go to the hospital...That was the very last time I rode without a DryRider in a tankbag/saddlebag. Rubber boots over leather boots are another great idea for trapping heat. They're thin yet give an additional layer for the leather inside not to breath. Helmet liners or skull caps help but best is a thin scarf, or extra large bandana, something you like from the materials section at a fabric store...to wrap around your neck to keep air from entering around your neck and going up through your helmet nad down to your chest. ALSO fopr those that have a regular stock windscreen...NOW is the time to order a PUIG, Maier or what ever touring windscreen for the cooler weather...it will not only protect you from the weather and save your precious (read expensive) leathers, but it should also improve your fuel economy...really!