Fins with great design. They are an excellent choice for divers entering the sport, the Stratos ADJ is easy to kick. The dual-material blade is designed to quickly reach the optimal angle needed to move water quickly and efficiently. This highly durable fin is a popular choice for resort rental programs. Features: Dual-material side ribs and blade help transfer maximum energy from foot pocket to blade tip, The Bending Zone between the blade and foot pocket allows the blade to quickly reach the optimal inclination for propulsion and water channeling, The dual-material foot pocket's Power Transmission Zone prevents stretching during the power stroke of the kick cycle, Quick Release buckles are easy to operate and make exiting the water hassle free, Ergonomic straps adjust easily, even while wearing thick gloves, Color: Black, Size: Giant