Size-M-54-57CM, L-58-59CM, XL-60-61CM, XXL-62-63CM, net weight: about 1500g. Material - ABS material, high impact resistance, heat resistance, low temperature resistance. HD lens - made of PC material, anti-fog, can block the flying objects. Stereowind window system - front and rear convection, smoother ventilation, keeping the internal air circulation. Removable - lining, easy to clean, soft and comfortable, cool and breathable, keep your head comfortable. Adjustable ventilation system Packing: 1X helmet General knowledge of helmet maintenance: 1. Maintenance of the helmet surface When the helmet has stains, first wipe the stain with a damp cloth, then wipe it with water wax or glazing wax to make the helmet feel bright. A helmet-specific brightener can also be used, which is more effective. 2. Helmet interior cleaning The detergent used is neutral, and shampoo is better. Do not use excessive force when scrubbing the inside of the helmet, otherwise the cushioning material will be deformed and its cushioning function will be lost. 3. Helmet goggles maintenance Add to the water with a neutral detergent, rinse with hand, then wash thoroughly with tap water, then dry the water with a soft cotton cloth or paper towel.
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