The metoro hat is weared by elementary school children when they go to school. This is saving from trafic accident because we are able to observe them from far away. and this hats protect from UV, are available handwashing so wearing everyday. This hat has hard brim and put inside it with rubberband and name tag. The yerrow metro hats spread to elementary school through out the counyry from the day of national security day established at 1960 AD in JAPAN. It`s desighn can be said that the child is protected for more than 57years.