Umbrellas, blooming in rainy days, keep us out of the rain. But when we put away the umbrella and put it against the wall, it is often easy to fall because of the unstable center of gravity. "Swing" is an umbrella with a rotatable handle. When in use, you only need to gently rotate the umbrella handle to a certain angle to increase the contact point between the umbrella handle and the wall, so that the umbrella can be firmly against the wall. In addition, "Swing" can also provide us with convenience when waiting for the bus in rainy days-hanging shopping bags to reduce the inconvenience when waiting for the bus in rainy days. The swirling change is between movement and static.