| 摘要 |
A supporter for supporting the waist of a user is installed on a backpack for smoothly ventilating in between the backpack and the waist when the user is carrying the backpack and carrying the backpack in summer for a long time. A portion to manufacture the supporter is previously formed to insert the supporter into a groove when the supporter is not used and prevent the sense of difference on the waist. [Reference numerals] (AA) Bag body;(BB) Bag string |
