| 摘要 |
PROBLEM TO BE SOLVED: To provide a lightweight outsole 5 having excellent workability and durability. SOLUTION: This shoe 1 has an upper 2, an insole 3, a midsole 4, and the outsole 5. The outsole 5 is formed by crosslinking a rubber composition. A base material polymer of the rubber composition contains 60%-90% polybutadiene by mass of a cis-1,4 bond ratio of >=80% and a Mooney viscosity (ML1+4 100 deg.C) of >=55. The rubber composition contains 10-35 parts of a filler to 100 parts of the base material polymer. A blending amount of a softener in the rubber composition is <=3 parts. The outsole 5 does not substantially contain bubbles. A gravity of the outsole 5 is 0.900-1.100.
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