ADVANCED BLADE CONSTRUCTION - The Avanti HC Pro fins are designed with an elastic technopolymer blade that offers exceptional flexibility, paired with a durable thermoplastic rubber blade that ensures a soft and comfortable experience ENHANCED PROPULSION EFFICIENCY - Featuring a unique channel effect created by two slightly longer soft side channels, the Avanti HC Pro fins naturally bend into a "spoon" shape during your kicking cycle, delivering greater propulsion with minimal effort REINFORCED BLADE DESIGN - Two strategically placed ribs at the back of the blade enhance its strength and performance, ensuring optimal thrust while maintaining control and stability in the water, making them perfect for demanding diving conditions COMFORT-FOCUSED FOOT POCKET - The closed foot pocket includes side ribs and rubber inserts that provide a softer feel and unmatched comfort, allowing for a secure fit without sacrificing ease of movement during dives VERSATILE SIZE OPTIONS - Mares Avanti HC Pro fins cater to divers with various foot sizes, ranging from 36 (12.8 in) to 46 (16.5 in). This extensive sizing ensures a secure fit, optimizing comfort and performance while minimizing fatigue and discomfort