| 摘要 |
PROBLEM TO BE SOLVED: To provide a ball housing bag having an expansion/contraction function, which enables a capacity to be changed according to a quantity and weight of balls, always having a ball near a bag opening, and facilitating taking out the ball.SOLUTION: A ball housing bag 1 with an expansion/contraction function includes: a bag bottom part 10; a bag periphery 20 having a lower edge connected with an upper edge of the bag bottom part 10; a bag opening edge part 30 connected with an upper edge of the bag periphery 20; and four or more elastic bodies 40 arranged on four sides of the bag periphery 20, or on the four sides of the bag periphery 20 and at positions between the two facing sides and having an appropriate interval. Two edges of the elastic member 40 are respectively connected with the bag opening edge part 30 and the bag bottom part 10. |
