Premium carbon fiber freediving and spearfishing fin blades, custom-built to match your power, technique, and style. Feel the difference with every kick.
All blades are handcrafted with premium carbon fiber. Foot pockets sold separately or as a set.
Every diver is different. We build blades to your exact weight, kick style, and diving discipline — tuned for you, not the average.
Soft, medium, hard, or ultra-stiff — matched to your body weight and kick power.
Length, width, and tip profile tailored to your performance goals.
Matte carbon, gloss clear, or custom tinted resin — make it yours.
We'll help you pick the right pocket to pair with your custom blades.
Fish Fin Blades was born out of a frustration with off-the-shelf fins that just didn't perform. We're divers, spearfishers, and carbon fiber craftspeople who believe your gear should work as hard as you do.
Every blade we make is built by hand, layered by layer, with premium-grade carbon fiber and aerospace-quality resins. We test everything in the water before it ships to you.
Based in South Florida, we ship worldwide and stand behind every blade we build. Custom orders welcome — and encouraged.
* State tax rates shown are base rates. Local/county taxes may apply. Shipping calculated by total order weight.
"Best blades I've ever dived with. The stiffness is perfect for my weight and the carbon layup is flawless. Already ordered a second pair."
"The camo wetsuit set is insane quality. Fits perfectly and the reef pattern is spot on. Got my first yellowtail wearing it. Highly recommend!"
"Custom order was exactly what I asked for. Communication was great, shipped fast, and the finish is beautiful. Will be back for more gear."
"Been freediving for 12 years and these are hands-down the most responsive blades I've tried. The energy transfer is unreal. Worth every penny."
