- Compatible with helmets that have side rails: the Rails Adapter fits and enables full use on compatible helmet models. - Easy to adapt when hearing protection is not needed: the muff components can be removed and placed out of the way of your ear. - Flexible, secure fit: after connecting, the earphones rotate 360 degrees and can be adjusted for a comfortable, personalized fit. - Vent and store conveniently: the earphones fold outward to vent heat from the ears and can also be folded back toward the rear of the helmet for compact storage. - Practical use scenarios: - Construction sites or industrial environments where helmets with side rails are used and hearing protection may be needed only intermittently. - Workshops or DIY tasks where you want to remove muff protection quickly while keeping the device attached. - Cycling or outdoor activities with rail-equipped helmets, enabling audio access without sacrificing comfort or safety.