Helmet Compatible Design: Wear this cycling cap comfortably under your helmet for extra protection during winter and summer rides.
Breathable & Lightweight: Made from soft polyester mesh fabric, it keeps your head cool and sweat-free while cycling or during outdoor activities.
Sun-Proof & Dust-Proof Visor: The extended visor provides excellent sun and dust protection, keeping you shielded on hot or windy days.
Multi-Sport Use: Ideal for cycling, running, hiking, fishing, and other outdoor activities, offering all-around comfort and functionality.
Adjustable Fit: With its elastic design, this cap fits head circumferences from 53 to 61cm (21-24 inches), ensuring a snug, comfortable fit for most users.
Product Description
Helmet Friendly
Compatible with bike helmet, can be worn under the helmet when cycling in winter.
Skull cap
ROCKBROS helmet liner perfect for riding, skiing, snowboarding and other winter outdoor activities.






























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