Apeks RK3 Fins

Apeks RK3 Fins

The Apeks RK3 Fins are known for their rugged design, high performance, and reliable function. Developed in collaboration with the US military, these fins feature a thermoplastic rubber build, an oversized foot pocket for drysuit boots, and a spring strap for quick donning and doffing. Moreover, they are available in three sizes: Medium, Large, and Super.

Unlike other fins, Apeks chose not to assign standard shoe sizes to the RK3. That’s because sizing truly depends on your diving environment. For instance, warm-water divers wearing wetsuit boots may fit the same foot pocket size as cold-water divers in bulky drysuit boots—despite both wearing size nine footwear.

Apeks RK3 Fins Features

• Inspired by one of the first vented rubber fins sold in North America, widely trusted by professionals and military divers.
• Compact and ultra-durable for use in the harshest conditions.
• Improved foot pocket and spring straps allow easy use, even with gloves or cold hands.
• A long-standing favourite of military, special ops, Coast Guard, and public safety divers.
• Short, broad blade maximises forward thrust while still allowing tight manoeuvrability.
• Vented blade reduces resistance on the upstroke and boosts thrust on the downstroke.
• Blade vents eliminate vortexes, much like modern split fins do.
• Materials resist damage from impact, cold, and long-term use.
• Two large grommet holes fit most karabiners for secure storage and transport.
• Spring straps are included as standard for added convenience.
• Custom buckle keeps spring straps in the best position for comfort and hold.
• Push-pin system allows for easy spring strap replacement when needed.

Apeks RK3 Colours & Sizes

• Sizes: Medium, Regular, and Super
• Colours: Black, White, Grey, Yellow, and Pink

Still searching for the right fit? Browse the full Apeks Fins range or view our Scuba Diving Fins collection for more options.