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SEPTEMBER Swim Surf Bikini
SEPTEMBER Swim Surf Bikini
SEPTEMBER Swim Surf Bikini
SEPTEMBER WOMAN WEARING SWIMSUIT
Home / Products / Island Bottom Lava Red
Island Bikini Bottom Lava Red
Island Bikini Bottom Lava Red
Island Bikini Bottom Lava Red
Island Bikini Bottom Lava Red
Island Bikini Bottom Lava Red
Island Bikini Bottom Lava Red
Island Bikini Bottom Lava Red
Island Bikini Bottom Lava Red
Island Bikini Bottom Lava Red
Island Bikini Bottom Lava Red
Island Bikini Bottom Lava Red
Island Bikini Bottom Lava Red
Island Bikini Bottom Lava Red
New

Island Bottom Lava Red

$94.00

Free domestic shipping over $200 or $6 flat rate and easy returns

Color
Lava Red

In collaboration with our good friend Kassia Meador

Meet our new Island Bikini Bottom—inspired by our best-selling Lucky Bottom, now with added contrast binding for a sporty, retro vibe. Designed for comfort, coverage, and movement, this high-waisted, stay-put bottom is perfect for surfing, swimming, and sun-filled adventures.

Made from sustainable ECONYL® fabric, the Island Bottom blends eco-conscious design with a secure, flattering fit. 

Julia, Taylor and Sierra are wearing the River top and Island bottom in small

Details
  • Classic scoop back with modern cut
  • Double lined in Italian ECONYL® recycled nylon
  • Medium coverage on rear
  • High-cut leg
  • Sculpting fabric properties
  • UV protective UPF 50+
Sizing

This style runs a bit small. If you’re in between sizes, consider sizing up for a better fit.

Julia's measurements (size S):

  • Height 166cm / 5'6
  • Bust 88cm / 35”
  • Cup 34C
  • Waist 67cm / 26”
  • Hips 90cm / 35"

Taylor's measurements (size S):
She is wearing size Small but can easily wear an XS

  • Height 160cm / 5'3
  • Bust 81cm / 32”
  • Cup 32B
  • Waist 61cm / 24”
  • Hips 86cm / 34"

Click here for more information on sizing

Fabric

78% ECONYL® regenerated nylon and 22% elastane

A soft, luxury Italian Recycled fabric with SPF50+ UV protection & ultra chlorine resistant.

ECONYL® yarn is made up from rescued materials from ghost fishing nets, fabric scraps, industrial plastic from landfills and oceans all over the world.

Italian recycled fabric deserves love & care.

  • Hand wash cold
  • Dry in shade
  • Do not machine wash
  • Do not tumble dry
Click here for more information on fabric and sustainability.

Details
  • High waisted bottom with modern cut
  • Contrast binding
  • Seamless finish
  • Full coverage on rear
  • Mid-cut leg
  • Double lined in Italian ECONYL® recycled nylon
  • Sculpting fabric properties
  • UV protective UPF 50+
Sizing

This style runs a bit small. If you’re in between sizes, consider sizing up for a better fit.

Julia's measurements (size S):

  • Height 166cm / 5'6
  • Bust 88cm / 35”
  • Cup 34C
  • Waist 67cm / 26”
  • Hips 90cm / 35"

Taylor's measurements (size S):
She is wearing size Small but can easily wear an XS

  • Height 160cm / 5'3
  • Bust 81cm / 32”
  • Cup 32B
  • Waist 61cm / 24”
  • Hips 86cm / 34"

Click here for more information on sizing

Fabric

78% ECONYL® regenerated nylon and 22% elastane

A soft, luxury Italian Recycled fabric with SPF50+ UV protection & ultra chlorine resistant.

ECONYL® yarn is made up from rescued materials from ghost fishing nets, fabric scraps, industrial plastic from landfills and oceans all over the world.

Italian recycled fabric deserves love & care.

  • Hand wash cold
  • Dry in shade
  • Do not machine wash
  • Do not tumble dry
Click here for more information on fabric and sustainability.

Customer Reviews

Based on 9 reviews
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H
Hwey Jane Liu (Queens, US)
Age: 55 -64
How It Fits: Perfect
Size Purchased: XS
Usual Size: XS
this is my favorite

I purchased this item few months ago, I enjoyed it very much.

N
Natalie Sageloly (Alajuela, CR)
Age: 35 - 44
How It Fits: Perfect
Size Purchased: S
Usual Size: S
How Lucky Indeed

The lucky bottom is a style I have been wearing since the beginning of SEPTEMBER. Erika truly understands what a true surf bikini needs to look and fit like. This bottom is extremely flattering on all body types and absolutely stays on in the surf. I have recommended this bottom to many surfer friends who also all love the style. They are simply elegant and beautiful.

R
Rithu Fernando (Marawila Town, LK)
How It Fits: Perfect
Size Purchased: XS
Usual Size: XS
The Perfect Surf Bikini

I love everything about the Lucky bottom (and the matching Eden top). I spent a long time searching for a bikini that stays *on* while surfing and this definitely meets that standard. It's also super comfortable and just slips on. The high waist and full coverage bottom are not only feminine and flattering but add a touch of modesty, which I truly appreciate as someone who seeks out more coverage in my surf and swimwear. Definitely my go-to bikini when it comes to surfing. Also, the Plum colour is LIFE! :)

K
Kirsty Coombe (Waikato, NZ)
Age: 45 - 54
How It Fits: A Little Small
Size Purchased: S
Usual Size: S
EDEN top plum

I love the swimwear unfortunately the small was just a little to tight on my waist so I'm going ro try a medium

a
allison vicenzi (Livingston, US)
Age: 25 - 34
How It Fits: Perfect
Size Purchased: M
Usual Size: S
Beautiful and functional

This was my second September swimwear purchase. I love the colors and always get compliments on the colors and the fit of the suit, which are the two attributes I am a fan of as well. They wash very well and look good over time. I was so excited to see you collaborate with another favorite brand W'Menswear! I had to snatch up a piece from that special collection. Thank you!

12
Kassia Meador surfing on longboard
Woman wearing yellow surf bikini top and bottom while holding a yellow and red longboard surfboard under her arm.
Shaley on the nose of her longboard in Kassia Meador bikini

What our Community is Saying

from 164 reviews
Perfect for surf, fits perfectly

This bikini supports good and stays in place while surfing this was exactly what I needed! I can not believe how comfortable with this bottom, highly recommend 🙌🙌🙌

Rose
Josie Boyshorts Agave Blue Rib
Perfect for surfing!

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.

Chloe
Paris One Piece Wasabi/Sea Foam
Ultimate Surf Suit!!

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!!

Nat
Alaia Surf Suit Coral Garden Print
this is my favorite

I purchased this item few months ago, I enjoyed it very much.

Hwey Jane Liu
Lucky Bottom Lichen
Truly beautiful color and design

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!

Isabella Kantek
Eden Top Island Blue
EDEN top - sun ray

Great colour and design

Kirsty Coombe
Eden Top Sun Ray Gold Print
Swim top - love the material!

Love how the material feels and the color!

Corie Pierce
Jane Top Lava Red

Great piece

M.G.
Paris One Piece Lichen/Army Green
So cute!

Love this green and white pattern and the easy fit!

C.
Eden Top Joker Check Bold Print
my go to rash guard!

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!

J.L.
Scorpion Sun Crop Top Indigo Eco Rib
my favorite bottom!

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.

J.L.
Eros Bottom Powder Blue Stripe Print
great top for surf!!

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!

Kira
Topanga Top Powder Blue Stripe Print
Best Purchase of the Summer

The Eros Bikini Bottom is a game-changer! Its sleek, minimalistic design accentuates all the right curves while staying comfortably in place—definitely my top pick for effortless beach days and soaking up the sun with confidence.

Abby
Eros Bottom Joker Check Petite Print
New Fave

The Topanga Top is my new favorite bikini top! It not only looks stunning with its flattering design but also feels incredibly comfortable. All my friends want to get one

Abby
Topanga Top Joker Check Bold Print
Best Purchase

I've always been a little hesitant about surfing in leggings but after my legs got so sunburnt after a trip Costa Rica, I bought these from SEPTEMBER and have never looked back. They sit high enough on the waist so they don't roll down when I fall and they are snug that they don't bunch up at the knees or thighs when they are wet. Couldn't recommend them enough.

Suzanna
Limitless Leggings Black