Convertible riding protection: This bicycle helmet is designed with multiple protection modes and adapts seamlessly from casual cycling to intense walks, anchored by a removable chin guard and a convertible full-coverage design. Full-coverage safety technology: Designed with a high-density padding layer and a full-shell construction, this helmet provides advanced impact attenuation to minimize injury risk on impact. Versatile shield technology: With an adjustable quick-closure visor that actively counters glare and environmental hazards without blocking sight lines. The multi-layer visor architecture filters intense sunlight while keeping out dust and light rain. Breathable adjustable fit: Strategically angled vents channel airflow through the helmet interior and minimize sweat buildup. The proprietary intelligent adjustment mechanism dynamically adapts to the shape of your head. Use scenarios: - Daily urban commuting and casual rides where sun exposure and weather vary - Fitness rides and outdoor walks that benefit from protection and comfort with the chin guard option - Light off-road rides or gravel paths that require full-coverage protection and reliable ventilation