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

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.

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.

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

Great prosuxt

For the money you cant beat it. Im no Kelly Slater but these fins do not seem any different then the stock white original FCS fins I had on my board.

The tip of the side fin is so sharp it tore a good chunk of my foot skin from a light contact moving from a sitting position on my board to prone. I compared them more closely to my other fins and they're definitely sharper.They also don't sit flush on the board.

No problems with shipping. Product appears as advertised and so far performed as expected. I would/will order more fins from Upsurf.