Fourth Element Tech Fin - Military Spec (Black)

Engineered for demanding technical, commercial, and military divers, the Fourth Element Tech Fin (Military Spec) in Black delivers unmatched power, precision control, and long-term durability. Built using a classic vented blade design crafted from high-density natural rubber, this fin is optimized for heavy drysuit configurations, thick neoprene boots, and high-thrust finning techniques like frog kicking and helicopter turns. Whether you are navigating technical wrecks, overhead cave environments, or Pacific Northwest cold-water reefs, the Tech Fin provides effortless propulsion with minimal turbulence.

Key Features and Highlights

• Natural Rubber Construction: Heavy-duty, high-density rubber composite designed for maximum power output, durability, and resistance to harsh marine conditions.
• Hydrodynamic Vented Blade: Hydro-flow vents reduce drag on the recovery stroke while maximizing forward thrust on the power stroke.
• Stainless Steel Spring Straps: Corrosion-resistant spring straps provide self-adjusting tension and effortless donning and doffing with drysuit gloves.
• Multi-Position Customization: Adjustable stainless steel bolt nodes allow strap position tuning for an exact fit around various boot sizes.
• Technical Trim Control: Engineered stiffness and weighting facilitate advanced propulsion techniques including frog kick, reverse kick, and helicopter turns.

Technical Specifications