The PEARL iZUMi Barrier Skull Cap is a low-profile, under-helmet cap designed to keep your head warm and protected when the temperature drops. Made to fit smoothly beneath a cycling helmet, it helps block chilly wind from your forehead and ears while still allowing excess heat and moisture to escape. This makes it ideal for cool to cold weather rides, early morning commutes, or shoulder-season training when a standard helmet alone just isn’t enough.
With a snug, streamlined fit, the Barrier Skull Cap stays securely in place without bunching, so you can focus on the road or trail ahead. Soft, comfortable materials help wick sweat away from your skin, reducing that clammy feeling on long climbs or hard intervals. The extended ear coverage adds extra warmth where you need it most, while the thin construction ensures your helmet fit remains comfortable and secure. Whether you ride road, gravel, or mountain, this versatile skull cap is an easy, packable layer that can make a big difference in comfort on cold, windy days.