The On Ultra Cap is an ultralight trail running cap designed for long runs and workouts in hot weather. Minimalist and comfortable, it offers excellent ventilation and effective sun protection while staying securely in place during your run.

It is made from recycled polyamide with spandex, an ultra-lightweight, stretchy, and quick-drying fabric, featuring mesh panels and laser perforations to maximize breathability, as well as an absorbent inner sweatband to manage sweat during exercise.