| 摘要 |
Disclosed herein is a container (1), which is easily contracted and elastically expanded to restore its original shape by a coil spring (7). This container (1) includes a flexible body (3) and a capacity control ring (5). The body (3) has a cylindrical interior for containing something. The capacity control ring (5) is spirally formed around the outer surface of the sidewall of the body (3), and allows the body (3) to be contacted and elastically expanded in a vertical direction, thus controlling the capacity of the body (3). |
