The Cressi Agua is a very easy fin to use, and doesn't require any special athletic or water-sport abilities, yet it still delivers excellent performance without tiring your feet. Thanks to the latest technology and Cressi's experience in developing these products, Cressi's been able to markedly decrease the weight of this fin compared to others in its category, while still preserving excellent responsiveness. The foot pocket features the original Self Adjusting Foot Pocket system, which thanks to the special softness and elasticity of the blends makes for a consistently soft and adherent fit. Fins have a long composite blade design that is placed above the foot pocket and is equipped with side rails and ribs to focus water flow down the length of the blade for maximum power and thrust. The comfortable foot pocket with open toe is equipped with a heel pull tab for easy donning and doffing. Fins are available in multiple sizes and colors.