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Castelli RoS Cycling Cap

Castelli RoS Cycling Cap
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Over-Engineered Simplicity

We wanted to make a cycling cap that's great in dry weather yet can protect in case of rain. The trick is a patented system in which the windproof, water-repellent front panel can fold back for complete breathability or fold forward to protect. Better yet, you have three ways to wear it: with the protective panel folded back, moderate breathability with the cap turned around backward, or full close. The Pertex fabric is ridiculously thin to fit under the helmet, yet has enough air permeability to prevent you from wetting out as you would under a non-breathable cap.

- Rain or Shine product made to excel in both dry and wet conditions
- Patented convertible front panel can close for wet conditions and open for extra ventilation in warmer conditions
- Pertex Quantum base fabric with low air permeability to let sweat escape, while the DWR coating keeps light rain at bay
- Extra thin and lightweight to fit under your helmet