{"product_id":"deep-apnea-elite-85cm-carbon-fiber-fin-blades","title":"Deep Apnea Elite 85cm Carbon Fiber Fin Blades","description":"\u003ch6\u003eOverview\u003c\/h6\u003e\u003cp\u003eThe Deep Apnea Elite 85cm Carbon Fiber Fin Blades are designed for freediving and spearfishing, combining a multilayer carbon fiber construction with responsive flex characteristics. Their design supports efficient propulsion during surface swimming, controlled underwater movement, and ascents, with reduced vibration during smaller fin kicks.\u003c\/p\u003e\u003ch6\u003eCarbon Fiber Construction and Performance\u003c\/h6\u003e\u003cp\u003eThe blades incorporate Variable Parabolic Stiffness (VPS), a multilayer carbon arrangement designed to produce a responsive flex and recovery cycle. As the blade bends under kicking force, its structure allows it to return toward its original shape, supporting propulsion while reducing unnecessary effort.\u003c\/p\u003e\u003cp\u003eThe quadraxial construction positions carbon fibers along four different orientations to improve resistance to torsional twisting. This reinforcement helps maintain controlled blade movement during directional changes and subtle kicks when approaching fish.\u003c\/p\u003e\u003ch6\u003eFoot Pocket Compatibility and Installation\u003c\/h6\u003e\u003cp\u003eChoose a Neritic, Neptonics, or Cressi foot pocket and the required Foot Pocket Size. Select No Foot Pocket for blades without foot pockets. Compatible foot pockets and the correct mounting configuration are required to use the blades as complete diving fins.\u003c\/p\u003e\u003cp\u003eBlade stiffness should be selected according to body weight, leg strength, and kicking technique. Proper stiffness allows the blade to flex and recover effectively throughout the kick cycle, while an excessively stiff blade may increase fatigue and reduce propulsion efficiency.\u003c\/p\u003e\u003cp\u003eDeep Apnea provides a three-year limited warranty against qualifying blade defects and breakage during normal freediving use, subject to registration, approved foot pocket installation, and manufacturer warranty conditions.\u003c\/p\u003e\n\u003cspan itemprop=\"mpn\" hidden\u003eDAE85SB-28\u003c\/span\u003e\n\u003cspan itemprop=\"mpn\" hidden\u003eDAE85SB-29\u003c\/span\u003e\n\u003cspan itemprop=\"mpn\" hidden\u003eDAE85SB-30\u003c\/span\u003e\n\u003cspan itemprop=\"mpn\" hidden\u003eDAE85SB-31\u003c\/span\u003e\n\u003cspan itemprop=\"mpn\" hidden\u003eDAE85SB-32\u003c\/span\u003e\n\u003cspan itemprop=\"mpn\" hidden\u003eDAE85SB-33\u003c\/span\u003e\n\u003cspan itemprop=\"mpn\" hidden\u003eDAE85SB-27\u003c\/span\u003e\n\u003cspan itemprop=\"mpn\" 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