| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-shoulder sore tool for an implement to prevent the straps of from slipping off from the shoulders, which can be mounted on any rucksack, and easy to treat even by a child. SOLUTION: A rubber ring 1 enables this non-slippage implement to be passed through any rucksack thread. An adjuster 3 for a cloth 2 enable this tool to apply to any size of rucksacks. When you put the rucksack on the back or put it off, this rucksack is easy to treat.
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