UP SURF Surfing 3fins S Size Double Tabs Surfboard Fins Base Tri fins Surfboard Thrusters Fiberglass Honeycomb

These fins were far nicer than I expected. Literally the exact same as any "high quality" fin on the market. I gave them a good test for about 3 weeks, almost surfing every day from Linda Mar to Santa Cruz. Unfortunately, I was inju3 in a climbing accident recently and looks like the board will be hung up for the rest of the winter season. But they are awesome fins for sure. Took awhile to come in though... So keep that in mind if you're in a pinch.

Same as all the brand names! Just way cheaper!

Great fins, look good too. Way better than the original fins the board came with. Fit into slots perfectly fine for me.

After two surfs, my fiancé really likes these fins. He says he feels he goes faster and throws more spray. After using plastic ones all of his life, he is definitely sold on this material going forward and won't ever surf the lesser quality ones again. Material matters.

Center fin foil is off-center. Left fin tip is delaminated. When placed in fin boxes, left vs right fins are not symmetrically canted. Do not waste your money on these, unless your surfboard's main purpose is decor.

Great prosuxt

Zero complains. They flex a little like the more expensive versions and had zero issues with them popping into the slots.

Terrible fins. They won’t fit in FCS boxes without having a third of the rear nub shaved down. Don’t buy these just cough up the money for real FCS fins.