| 摘要 |
PROBLEM TO BE SOLVED: To provide shoes which are hard to get dirty even if used for a long period. SOLUTION: In the shoes respectively consisting of a sole and an upper, material which is evaluated to be at the third grade or higher than this about a dirtiness degree by a gray scale in a test of dirtiness with dry and solid soil using soil and sand in a loamy layer of the Kanto district is used at least as a part of the upper. To put it in the concrete, material which is evaluated to be at the third grade or higher than this about the dirtiness degree by the gray scale in the test of dirtiness with dry and solid soil using soil and sand in a loamy layer of the Kanto district is desirably used for a tongue part, the front part of a top-line, the rear part of the top-line, the rear part of an instep, an insole, a shoelace, etc. COPYRIGHT: (C)2006,JPO&NCIPI
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