The kit includes 8 boats, divided into two team colors (4+4) and 6 buoys. Each boat in the team has an individually coloured mast so the boats can be told apart. Each boat includes a mast and a boom, and an embedded magnet, also for the buoys. With the magnet the boats and buoys can be attached to a whiteboard or other metallic surface when discussing team racing strategy with the sailors. The boats and buoys arrive in a box with a magnetic seal where they can be re-packed into when not in use. Boats and buoys come in a colorful waterproof 3D printed box with a rubber strap. Learn more about opti team racing rules from https://www.amazon.com/Team-Racing-Companion-Practical-Companions-ebook/dp/B07F3KR6LD?fbclid=IwAR3bNwKe4QzuqyQA4CwTTYwKZ1USQMTl6XANNXijY0kDeEiIg7uYOwBhm84 .