RK3 Fins

The Apeks RK3 is a traditional, all-rubber fin that's been the standard for coast guard, special ops, military and public safety divers for decades — but don't let the résumé put you off, because that same simplicity and durability make it a genuinely great option for everyday recreational and cold water diving too. There's nothing complicated about it: a tough, dependable blade that just gets on with the job dive after dive. The blade material is built to hold up in the harshest environments, temperatures and general abuse, so it's the kind of fin you can throw in a boat, drag over rocks and forget to baby without worrying about it. The short, wide blade gives you strong forward thrust while staying easy to manoeuvre, and the vented design reduces resistance on the upstroke while enhancing thrust on the downstroke — meaning less effort for more push, whether you're finning against a current or just want an easier surface swim back to the boat. The RK3 comes standard with high-quality stainless steel spring straps, so you get easy, one-motion donning and doffing straight out of the box — no fiddling with rubber straps, even with cold hands or thick gloves. It's available in four sizes: Small, Medium, Large and Super. Rather than a shoe size range, Apeks sizes by these categories because fin sizing really comes down to how much your footwear takes up in the pocket, not your shoe size on its own. A size 9 in a thin wetsuit bootie and a size 9 in a thick drysuit boot fill very different amounts of space, so think about what you'll actually be wearing when you dive and size around that. Features: Traditional all-rubber design   — simple, dependable performance with nothing to go wrong. Oversized foot pocket   — comfortably accommodates drysuit boots as well as wetsuit boots. Stainless steel spring straps as standard   — quick, easy donning and doffing, even with cold hands or thick gloves. Custom-designed buckle   — holds the spring strap securely in the optimum position. Buckle attached with a stainless steel nut and bolt   — a properly secured fitting rather than a weak point waiting to fail. Short, wide blade profile   — delivers strong forward thrust while keeping the fin manoeuvrable. Vented blade design   — reduces resistance on the upstroke and increases thrust on the downstroke. Two large grommet holes   — sized to fit most carabiners, so you can clip the fins to your kit for the walk to the dive site. Built to take a beating   — the blade material is designed to hold up to harsh environments, temperature extremes and general abuse. 4 sizes available   — Small, Medium, Large and Super. Specifications: Fin Material Thermoplastic Rubber Dimensions Medium - 19.15in L x 9in W Large - 21.5in L x 9.5in W Super - 22.5 in L x 9.5in W Weight Medium w/ Spring Straps - 2.25 lbs Large w/ Spring Straps - 2.75 lbs Super w/ Spring Straps - 2.75 lbs Buoyancy All Sizes with Spring Strap - neutrally to positively buoyant Buckle Attachment 316 stainless steel nut and bolt Foot pocket Open heel design Spring straps Yes Vents