The Zoggs Ultra Blue Fins are designed to help you get the most out of your swim. These dual density co-moulded silicone blade fins have been engineered for optimum propulsion, performance, and comfort. The rigid and durable silicone blade creates a balanced and natural rhythmic kick, reducing muscle fatigue on the calves and making your swim more enjoyable. The soft foot ensures a customized fit, while the grip underneath and tab on the heel make it easy to put them on. These fins are perfect for swimmers looking to step up their game.