Wear Castelli's Skullcap under your helmet in the summer months to keep sweat out of your eyes. Despite the coverage. you'll remain cool and comfortable thanks to the mesh top panel that keeps the air flowing. The stretch fabric makes this cap a great fit on the majority of head sizes and shapes.

Features:

• Wicking layer to keep sweat out of your eyes
• Mesh top panel for ventilation
• Fits under helmet
• One size fits most design