Grennan Tri

A San Diego famous design, first invented by local legend, Jeff Grennan, quickly adopted by Frye and others. 

Growing up in San Diego, I've been privilege enough to meet and surf with Jeff.  I'm stoked to continue sharing the unique design. These are Grennan templates, the foils and layups are way different than your standard shelf fins. 

FCS 1

Size Mediums 

Handmade by AO