Being a safe diver is important more and more people are boating each year and there is increased watercraft traffic in our favorite dive sites. This 4 ft. Ball float has a lead weighted bottom to avoid inverting while in use. It has a Ring at the base for line attachment and rubber stoppers on the pole to eliminate flag slippage. Ball is made of Styrofoam for extreme positive buoyancy, yet light weight for ease of transport. The 4 ft. pole allows flag to be highly visible from long distances for increased safety.