Method of Selecting Kind of Size of a Helmet and Shape of a Pad, Method of Adjusting Helmet Size by Using the Selection Method, and Head Size Measuring Tool Used in Aforesaid Selection Method

A selection method of selecting a kind of size of a helmet and a shape of a pad comprising:

• a process for inputting a front & back length-size and a right & left width-size of a head portion of a helmet wearer as data respectively into a computer which can utilize a program necessary for the selection of the kind of said helmet size and the shape of said pad;
• and
• a process for respectively selecting the kind of said helmet size and the shape of said pad, which respectively fit said helmet wearer, by data-processing said front & back length-size and said right & left width-size by using said program, wherein there are further comprised:
• a process for inputting a right & left front-cheek width-size of the head portion of said helmet wearer (This right & left front-cheek width-size means the distance between the region consisting of a projection portion and the vicinity thereof of a left side cheek-bone of said head portion, and the region consisting of a projection portion and the vicinity thereof of a right side cheek-bone of said head portion.) and a right & left back-cheek width-size (This right & left back-cheek width-size means the distance between the region consisting of a portion and the vicinity thereof on the slightly front side from the lower end of a left side earlobe within the left side cheek portion of said head portion, and the region consisting of a portion and the vicinity thereof on the slightly front side from the lower end of a right side earlobe within the right side cheek portion of said head portion.) respectively to said computer as data thereof, and
• a process for selecting a shape of the cheek pad fitting said helmet wearer by data-processing said right & left front-cheek width-size and said right & left back-cheek width-size by using said program.