designer's own words:Invisible water vase, allows you to create a beautiful flower bouquet in a vase where the water reviving the flowers is practically invisible. Simply fill the water in as described below, arrange the flowers and enjoy a beautiful bouquet that lasts and lasts. The water filling process: Seal the hole at the bottom of the pole using your finger. The pole in the center of the vase is hollow. Pour the water into the top of the empty pole as described in the figure below: When the pole is filled with water, insert the stopper or the cap into the hole on the top of the pole and release your finger. At this point, the water fills the bottom tray up to the hole creating a vacuum that stops the water at the point of the edge of the tray. When flowers absorb the water, new water will flow again and keep the tray full at all time and the flowers' freshness. Now the flowers can be arranged.