1. Tilt the helmet forward so that the forehead of the head is put into the helmet first, and then pull down, so that the helmet is completely put in.
2. After the helmet is put on, shake the helmet back and forth to make the head comfortable to wear, and then adjust the wearing to the proper position and insert the buckle for a firm connection. Then pull down the mask lens to make the waterproof rubber strip of the mask fit tightly with the forehead of the shell.
3. When you want to take off the helmet, untie the helmet; that is, press the buckle on the helmet with your fingers and pull it apart to expand the opening of the helmet, and then take it off from front to back.
