Talking about the rules? Pre or post race tactics discussion? These handy plastic boats are perfect for the informal rules discussion, protest room hearing or the coach on the water. Each kit contains 4 boats(yellow, blue, green, red), a RC boat, 4 marks and wind and current directions. Kit comes with water resistant Tyvek« carrying envelope to keep organized. Fits in standard #10 envelope for mailing. MADE in the USA.