| 摘要 |
A roller skate is disclosed, in which two wheels are provided, and width can be freely adjusted, and the wheels can be detachably attached to a rear side of a shoe with a band. The wheels are moved down when used, and the wheels are moved up when not used by allowing the wheels to move up and down. So, when not used, the user can walk as if conventional shoes are worn. The movement and wearing are easy, and the size can be freely adjusted, and it is very easy to start, run and stop.
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