A surfboard leash is a cord that connects a surfer's ankle to their surfboard. It is designed to keep the board close, preventing it from drifting away after a wipeout. This safety feature helps surfers avoid losing their boards and reduces the risk of injury to others in the water. Typically made from durable materials like urethane, surfboard leashes come in various lengths to match different board sizes and surfing styles. They often include a Velcro strap for secure attachment to the ankle and a swivel to prevent tangling. Proper use of a leash enhances safety and convenience while surfing.