The CETMA COMPOSITES monofin made of fiberglass. The Dolphin Monofin by CETMA COMPOSITES is made with a multi-layer structure in high quality fibreglass, of aeronautical origin to offer the best performance. It is equipped with the comfortable s-WiNG CETMA COMPOSITES footpockets, ensuring comfortable use even after many hours. The Monofin Dolphin is an excellent choice for swimming, dynamic freediving and in constant weight. It was created for all free divers who want to improve their performance. Available in one stiffness with 7 footpocket numbers.