The Dakine Longboard Ankle Leash 9ft x ¼" is designed to offer low-drag and maximum strength. Crafted with ¼-inch of high-quality Urethane Dura Cord attached with marine-grade swivels and durable Opti-Flesh leash ends, this leash is the perfect addition to your surfing kit. PLEASE NOTE: The Vintage Blue is a calf leash not an ankle leash