| 摘要 |
Footwear, such as a boot, having a vacuum release tube attached at the back of the boot along the lower part of the boot extending from the sole of the boot to approximately 10-30 inches above the sole of the boot. The vacuum release tube may be rigid, semi-rigid, or flexible, and the length of the vacuum release tube may be chosen based upon the intended use of the boot. The vacuum release mechanism can be electro-mechanically or pneumatically enhanced. |
