A Pair of composite full foot, non-vented, hard blade fins specifically designed for spearfishing and freediving. Modular synthetic blades made of a mixture of fiberglass and polypropylene for optimal thrust. Custom formulated insert in the center of the blade for added reactivity and propulsion. Blade angle designed at an anatomically correct 20-degrees for superior performance and ease of use during surface swimming. Plus blades are removable – Fully upgradable lightweight design