▶Modular helmet with sun visor and sun visor, easy to use and slide, and can be flexibly switched, thereby maximizing the field of vision. The chin strap is reinforced and equipped with a quick release buckle to ensure the safety of the rider. ▶ABS material, lightweight shell, high strength. ▶The helmet is only 1350g±50g, light weight, comfortable inner lining, no fatigue after long-distance cruising after wearing. ▶Hot-pressed sponge lining material. ▶Dual lens design, built-in lens. ▶Removable and washable breathable lining, adjustable vents, quick release frame, quick and convenient buckle. ▶Please carefully measure your head circumference before buying to avoid buying mistakes. ▶The correct method of measuring head circumference: From the root of the forehead to the back 2 cm (around the head), you need to calculate the hair. size: S head circumference/ 55-56cm M head circumference/ 57-58cm L head circumference/ 59-60cm XL head circumference/ 61-62cm Package Contents: 1* modular helmet