Layering the Pearl Izumi Transfer Cycling Cap under your helmet provides quick-drying, wicking action to keep you dry in both the heat of summer and the chill of spring, which can be key to staying warm in conditions that aren't quite cold enough for full winter gear. Its wicking comes courtesy of P.R.O. Transfer fabric with Minerale and is supplemented with an In-R-Cool lining that cools your skin so you don't overheat. Pearl Izumi adds reflective logos to help increase visibility to other road users in low-light conditions.