| 摘要 |
PROBLEM TO BE SOLVED: To provide a ring-like strap for a shoulder belt for a school knapsack which is hardly stuffy and can be used as a shoulder belt for a conventional school knapsack and is freely removable and can be easily replaced. SOLUTION: This ring-shaped strap for a shoulder belt for a school knapsack is a ring-like strap with an embodiment in which a shoulder belt 1 is inserted through the inside and consists of a surface side fabric 2 with stretchability and an air-permeable cushioning material 3 positioned on the side being brought into contact with the body. |
