Feline Keel Twin Fins
Feline Keel Twin Fins
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Meet the Keel Twin Fins—where classic surf vibes meet modern flair. These babies are your ticket to smooth, clean lines and effortless speed on your favorite fish.
The flat inside foil and long base deliver that timeless drive and stability, while the smaller profile offers just the right amount of looseness when you want to spice things up. A more refined version of an old school classic, they just might become your new go-to for a surf session that’s as fun as it is fluid.
Base | 6.5" |
Depth | 4.8" |
Foil | Flat |
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More Than Just A Pretty Face
Yes, we're incredibly good looking. But we're also thoughtfully designed from the inside, out. All our fins are made of premium fiberglass with a honeycomb core, shaped based on our curated collection of well-balanced templates.

Meet Quimby
We understand that surfing means different things to different people and belongs to everyone. Sure, it can be a workout or a competitive thrill — but it can also be therapy, a meditation, a way to catch up with friends and get outside.