Fourth Element Military Spec Technical Fin

Engineered for serious divers who demand precision, power, and durability, the Fourth Element Military Spec Technical Fin delivers uncompromising performance beneath the surface. Built around a classic vented design and reimagined for modern technical diving, this fin combines intelligent hydrodynamics with robust construction to maximise every kick.

Manufactured from natural rubber with a unique density gradient, the fin offers a soft, comfortable foot pocket while maintaining optimised blade stiffness for powerful propulsion. The hydro-flow venting system channels water efficiently along the blade, reducing drag and minimising fatigue on longer dives. Reinforced ribs and stiffening lateral rails ensure energy is transferred directly into forward motion — giving you maximum return on effort.

Designed with technical divers in mind, the fin has a slightly negative buoyancy profile for improved control underwater, yet remains perfectly suited to divers of all levels seeking a high-performance rubber fin. The wider blade enhances manoeuvrability without sacrificing thrust, while the shorter overall length improves agility and makes packing and transport easier.

With no metal components and a durable double bungee heel strap system replacing traditional spring straps, this fin is built for reliability in demanding environments.

Key Features

Natural rubber construction with density gradient technology
Soft, ergonomic foot pocket for comfort
Hydro-flow vents to reduce drag and fatigue
Turbulence disruptors for smoother propulsion
Strengthening ribs for durability
Stiffening lateral rails for enhanced power transfer
Double bungee heel strap (no metal parts)

Specifications

Weight: Approx. 2.5 kg per pair
Buoyancy: Slightly negative
Sizes: Medium, Large, XLarge, XXLarge
Colours: Dark Green, Black

Whether you're conducting precision technical dives or simply want a powerful, dependable fin for recreational diving, the Military Spec Technical Fin delivers performance you can rely on dive after dive.

Fourth Element Stealth Tech Fins (Military Spec)