The Apeks RK3 is a rugged thermoplastic rubber fin featuring an over-sized foot pocket to accommodate drysuit boots and a spring strap for easy donning and doffing.
Short wide blade provides maximum forward thrust while maintaining great manoeuvrability, which makes it perfect for divers who use a breaststroke kick rather than a freestyle kick. Extremely durable and built to withstand the toughest environments, temperatures and abuse. Material provides remarkable propulsion. Size requirements vary depending on if they will be used with a drysuit boot or a wetsuit boot.
I love my RK3's they are light weight and neutrally bouyant, I get great propulsion and can easily reverse kick at will. To me these are perfect with one tiny setback - they are just a little light for drysuit diving, when my feet tend to float I would need about a 1 pound weight on each foot. that's it !