In addition to the completely new canopy form, this umbrella is also the first umbrella to use an internalized mechanism. This is possible because the distance between the open and closed positions on the Sa can be shorter than with traditional umbrellas. Since this is the case, there is no need to have any exposed slider components.
To open the Sa, you simply need to rotate the bottom of the handle. The spring-loaded mechanism will open the umbrella automatically.
To close the Sa, pull on the handle, just like you would with a bicycle pump or pinball machine. The handle will retract.