BirdieBall Floating Green requires a little bit of assembly. Greens are shipped in four foot widths and taped together. This is not a difficult process. Once taped together, the three birdietargets can be affixed to the surface. Then finally the ballast/anchor retainers (heavy rubber corner pieces) are affixed. These heavy rubber pads provide three funcions. First, the are heavy and hold the green firmly against the water keeping wind from getting under the green. Second, the rubber balast has a hole to which the anchor/shore teathers are attached. Third, the rubber pads have a handle which allows you to pull the green in and out of the water.