The CapInsulator is a smart way to prevent heat loss from the top of your head while wearing your favorite cap. Made with featherweight DuPont HolloFill TM, the CapInsulator forms a protective barrier against brisk winds and rain. The soft quilted dome construction fits any cap while maintaining your caps' original fit and shape. This product is ideal for people with short or thin hair! Now you can enjoy your favorite logo caps year round.