Castelli Summer Under-Helmet Beanie Deep Black

The Castelli Summer under-helmet beanie is that essential piece that makes the difference between an oppressive training session and an enjoyable ride. Designed with a minimalist profile, its main function is to manage moisture and heat without adding unnecessary bulk under the helmet.Features:Absorbent layer to keep sweat away from the eyesMesh upper panel for ventilationDesigned to fit under the helmetWeight: 21 g