Firefighter Fireman Costume for Child Role Playing Halloween Trick-or-Treating

Is there a trick to getting the fire extinguisher to work? Ours doesn’t work.

Size chart does not match my sons measurements. is height measured to shoulder or head? he is 3.5y old, 42"h, 21"w, 24"hip, 22" chest. wears sz5 cloth

Is the material thick? And is the waist band of the pants electric?

Does the costume have reflective material on it?