🌞 Spring'25 Drop 2: Permanent Vacation Available Now 🌞
🌞 Spring'25 Drop 2: Permanent Vacation Available Now 🌞
by Erika Togashi March 04, 2024 4 min read 1 Comment
The surf is on, you’re grabbing your favorite SEPTEMBER swimsuit, the mid-length waits for you in the trunk of the car but should I ride it as a single fin? Maybe a two plus one? Or what will it feel like as a quad? Does a mid-length twin fin sound crazy?
Too many questions. Not enough answers.
The answer might be a little clearer than we first thought.
First, let’s check the conditions and put them into four categories:
Most of us regardless of our level can sit on the beach and roughly determine where the conditions fit into these parameters, and the boundaries between them can be relatively flexible. A big or fast wave for you might not be big or fast for someone with more experience; so be honest with yourself and take it personally.
So let’s relate fin selection to those categories.
Small or soft waves are low on the potential energy from Gravity. If we’re not as high up or the wave slope isn’t so steep, then we won’t have much of a hill to drop down and gain speed. This means we need to make the board as efficient as possible, so it can still function in low energy waves. Allowing water to flow underneath the board with as little disruption and turbulence as possible is our ticket to this. So less fin = more laminar and clean water flow producing more lift to reduce drag, and more forward thrust. In big or steep waves where we have a good hill to drop down, then we’re not so concerned about finding speed, but instead getting down the line and past fast-breaking sections might be the challenge.
In brief, twin-fins are fast as they allow water to flow underneath the center of the board with low turbulence (no center fin disrupting the flow). The clean water flows backward producing more thrust forwards. And since the twin fin fins are often fairly large, they produce a lot of lift towards the wave face, so surfing down the line they can lock the board into the wave face and generate strong speed and grip. Without the center fin though they are a little looser and slippy when we lean on the back foot to maneuver, as the missing center won’t hold and direct the nose. What that means is twin fins are well suited to small or soft waves where generating speed is the priority but expect a little less predictability when maneuvering.
The two-plus has the directional stability of a single fin, with a small portion of rail engagement from the side fins. Sometimes the overall size of the three fins is a bit smaller than a normal single fin, or normal side fins, and that’s so the overall drag created is less. Look for a bigger wave or faster wave for this setup to work best as we need to compensate for the drag.
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by Charlotta Linder April 12, 2025 3 min read
Erika and Nat discuss the SEPTEMBER x Alaia Mentawai collaboration, sharing their creative journey and what inspired the collection.
by Charlotta Linder January 24, 2025 2 min read 1 Comment
Discover why winter waves are always worth it—our top tips for staying warm, making every chilly surf session unforgettable, and enjoying those post-surf moments. 🍵
by Charlotta Linder October 07, 2024 1 min read
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I’ve been wearing the Atoll Bikini Top lounging in the sun and staying active at the beach—it’s quickly become my go-to. The fit is true to size and feels super supportive thanks to the molded elastic under the bust and adjustable straps. I love how soft the fabric is, and it is such a flattering fit without feeling restrictive.
As someone who’s in and out of the ocean all the time, I appreciate that it holds up well in saltwater and sun—and the UPF 50+ protection is a huge bonus. Plus, the fact that it’s made from regenerated materials like ghost nets and ocean plastic makes me feel good about wearing it!
As a minimal, stylish piece that fits well & feels good, I'd highly recommend!
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I've been wearing my September Atoll Top and Lucky bottoms to the pool and the beach and just love the classic fit. It's super elegant and functional, so I can lounge in it or be active and take it out to the surf! The Lagoon Green Stripe print is super fun too and makes me feel like I'm surfing in the 60s which is such a vibe.
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This is one of my favorite one pieces to surf in! The material is soooo silky smooth and it fits snug but comfy. The back detail is cute and it doesn’t move around even in big surf! If it’s a sunny day I like to throw a cropped rash guard over it.
I’m 5’3” and am wearing XS (My usual size AU6) it fits me perfect. The print and color is super cute and standing out in the water. This suit is also so comfortable and You don't need to worry anything while surfing. Defiantly recommend!!
I purchased this item few months ago, I enjoyed it very much.
I believe this is the prettiest bikini I ever had. The fit is very flattering, the fabric is simply beautiful and really well made. I'm in awe. Needed to exchange for a different size (only the top) and the whole process was easy. I cannot wait for my second purchase!
Great colour and design
Love how the material feels and the color!
Great piece
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The Scorpion top is fantastic! I love the high neck and long sleeves for sun protection. The ribbed texture is a nice touch, and the quality is amazing. It feels so luxurious and super comfy. It pairs wonderfully with either the Lucky or Eros bottom. Definitely a great addition to my swimwear collection!
I recently picked up the Eros bottom, and it’s my new favorite for surfing this season. It’s cheekier than the Lucky, which I like, and the high waist is super flattering. Plus, it stays put, even in big waves. The quality is top-notch and totally luxury. Definitely my go-to for the recent summer swells.
I just got the Topanga surf top, and it's awesome! It's like a sports bra, super comfy, and it stays put. The quality is great, really sturdy and holds up well in the water. Plus, it fits perfectly true to size. Definitely a solid choice for any surf day!
Scott
November 29, 2021
Very informative, thank you. Surfboard fins are probably the most underrated element of a surfboard. They’re actually great to have for safety and choosing the right fins for your style of surfing and your board is critical in making sure you get the best level of performance from your surfing.
Read more about surfboard fins and safety here:
https://3dfins.com.au/blogs/media-spotlight/surfboard-fins-and-safety