Using this Met Downtown MIPS helmet is easy. First, put it on your head and use the Safe - T Twist 2 Fit System to make quick one - handed adjustments until it fits snugly. You can also adjust the 360° head belt and the adjustable cam navider for a more personalized fit. When you're out on your e - bike or trekking, the helmet will keep you safe with its MIPS - C2® brain protection system. Make sure to clean the washable comfort padding regularly. You can remove it and wash it with mild soap and water. For the rest of the helmet, wipe it down with a damp cloth. Avoid using harsh chemicals as they may damage the helmet. When not in use, store the helmet in a cool, dry place away from direct sunlight. This will help maintain its quality and performance for a long time.