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Sustainable surf bikinis and swimwear

Sustainably made from recycled materials.

Bikini tops Bikini bottoms

Swimwear for superheroes

Sustainable. Stylish. For the protection of our oceans.

Shop sustainably now

MAIN Mini kids collection

Play worry-free with UPF50+ sun protection.

To the shop

MAIN essentials

New beach towels are online.

To the shop

To protect our oceans

We donate 1% of all online sales to Healthy Seas.

Swimwear

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Quick buy

Charm Surf Bikini Top

CHF 59.90

Hey Leo

aquamarine

emerald

amethyst

coconut stripes

dark coral

Seabreeze Mint

black

stormy tie dye purple

+ 6 more

XS S M L XL

23 reviews

Quick buy

Luxe bikini bottoms

CHF 59.90

black

pink diamond/jade

coconut stripes/white

XS S M L XL

4 reviews

Quick buy

Hale Bikini Top

CHF 59.90

black

coconut stripes

emerald/hey leo

stormy tie dye black

+ 1 more

S M L

1 review

Quick buy

Serene Surf Bikini Bottoms

From CHF 39.90 CHF 59.90

Sale

Hey Leo

aquamarine

black

emerald

ocean

stormy tie dye black

+ 3 more

XS S M L XL

2 reviews

Quick buy

Pasta Bikini Top

CHF 41.90 CHF 59.90

Sale

pink diamond

ocean

black

stormy tie dye black

+ 1 more

XS S M L XL

8 reviews

Quick buy

Blush Surf Bikini Bottom

CHF 59.90

ocean

amethyst

coconut stripes

pink diamond

Seabreeze Mint

black

dark coral

stormy tie dye purple

elderberry

+ 6 more

XS S M L XL

12 reviews

Swimwear for superheroes

At MAIN Design we combine style, quality and sustainability. Our swim and beach fashion is more than just clothing - it is a statement for a conscious lifestyle. Each piece is made with love, care and respect for people and nature. Because real superheroines not only look great, they also do good things.

Discover our mission

Ethically handmade

All of our products are handmade with love in Bali under fair working conditions.

Sustainable

Our products are made from recycled and/or sustainable materials.

For nature

To protect our oceans, we donate a percentage of our online sales to Healthy Seas.

Trending categories

These categories are trending right now.

Surf bikinis and swimwear

Bikinis and one-pieces

Children

Swimwear and toys

Bags, toiletry bags, wallets

Bags

Accessories

Jewelry

Popular products

Quick buy

BAGGU Pleated Tote Bag

CHF 36.90

Chrome metallic

black

mahogany

Quick buy

Sassy bikini top reversible

CHF 59.90

aquamarine/amethyst

coconut stripes/white

emerald/hey leo

pink diamond/jade

Cali Sunglow/Wild Lavender

apricot sunset/sea spray

+ 3 more

XS S M L XL

4 reviews

Quick buy

Alice Bikini Bottom

From CHF 39.90

aquamarine/amethyst

emerald/hey leo

black

dark coral

ocean

stormy tie dye black

elderberry

mocha

black sand

+ 6 more

XS S M L XL

17 reviews

Quick buy

Beach Towel Illusion

CHF 39.90

roseberry

1 review

Let customers speak for us

from 200 reviews

Kristallanhänger vergoldet

Qualitativ gut verarbeiteter Anhänger.
Trage ihn täglich

Sarah Gugger

01/22/2024

Kristallanhänger vergoldet

Kinder UV Shirt

Angenehm leichter Stoff, kann problemlos als normales T-Shirt getragen werden

Sarah Gugger

01/22/2024

Aina Kinder UV Shirt

Mädchen Bikini

Tolle Farbe!
Bikini Oberteil lässt sich praktisch in der Grösse anpassen

Sarah Gugger

01/22/2024

Mia Mädchen Bikini

Sehr schöner Schnitt!

Ich bin 172cm und 60kg und habe Grösse S bestellt. Sitzt super und dank doppellagigem Material angenehm zu tragen. Ich bin gespannt, wie er sich zum Surfen anfühlt. Vielen Dank für die schnelle Lieferung!

Jessica

02/13/2026

Divine Surf Badeanzug

Comfortable and practical

This bag holds so much! It doesn’t feel heavy on the shoulder, and the strap doesn’t slip off. It’s a very great quality material and so cute. Love this bag so much.

Patricia A

02/09/2026

BAGGU Nylon Shoulder Bag

Sehr geräumige Tasche

M.G.

01/20/2026

Stofftasche von OMOM

Schlichter und jederzeit stylischer Schnitt!

Sehr angenehm zu tragen, nicht nur für's Wasser, auch als Sport-BH oder Top für unter ein Shirt super geeignet!

Jessica

01/17/2026

Sassy Bikini-Top

Hält super beim Surfen!

Ich habe bereits zwei dieser Oberteile in verschiedenen Farben und es verschiebt nichts beim Surfen! Angenehme Träger, einfach zu binden und langlebiges Material!

Jessica

01/17/2026

Charm Surf Bikini Oberteil

Schönes Portemonnaie

Kleines handliches praktisches Portemonnaie
Sehr schön verarbeitet

Daniela Martinotti

01/05/2026

Babylone Leder Portemonnaie

Passform, Farbe, Design

Badeanzug wie erwartet. Gutes, angenehmes Material.

Kimena

12/23/2025

Nova Badeanzug

Toller Badeanzug

Schöne Farben. toller Schnitt, mitwachsend. Werde wieder bestellen.

A.

12/09/2025

Lena Mädchen Badeanzug

Hübsches Portemonnaie

Das Portemonnaie ist sehr handlich, hat einen hübschen Glanz und ist toll verarbeitet. Bin sehr happy mit dem Kauf 😍

anonym

12/05/2025

Babylone Leder Portemonnaie

Best bikinis and best service! Highly recommend

Rosary

12/03/2025

Main Design

Unglaublich angenehm - ich liebe ihn!

Ich wusste nicht, wie sehr ich den Kimono brauche, bis ich ihn gekauft habe. Er ist nun mein Begleiter bei jedem Schwimmbad- und Wellnessbesuch. Er ist super angenehm zu tragen. Ein Essential, auf dass ich nicht mehr verzichten möchte.

Anonym

11/24/2025

Kimono Amazona

Wie erwartet

Alles gut, wie erwartet.

Clara

11/10/2025

Flair Bikini Hose

Our way of living, designing and connecting – from Switzerland to the sea

We believe in:

Quality in everything we create –
and mindfulness in everything we do.

Maria Rashguard

Sale price CHF 49.90 Regular price CHF 69.90
Sale

black

elderberry

stormy tie dye black

S M L
Keira Surf Bikini Bottom

Sale price CHF 27.45 Regular price CHF 54.90
Sale

black

ocean

stormy tie dye black

XS S M L XL

This is MAIN Design

We simply made the perfect surf bikinis ourselves. Why? Because we dreamed of functional, sustainable and beautiful swimwear - and the market couldn't offer us anything that really lasted.

MAIN Design stands for high-quality swimwear with a well-thought-out design that adapts to every wave. We combine minimalist style with maximum support and rely on sustainable materials. Our collections are made for women who love the sea - and for children who want to splash around just as carefree.

Designed for performance. Manufactured with responsibility.

By us, Yvi and Tiina, with great attention to detail and a deep respect for nature.

Get to know us!

Our core values

Sustainability and Fairness

Our sustainable swimwear is made from high-quality, recycled materials - resource-saving, durable and environmentally friendly. We rely on fair production and responsible manufacturing processes so that you can jump into the waves with a good feeling.

Our core values

Swimwear for every body type

Whether sporty, curvy or petite, young or old – we celebrate diversity! Thanks to Mix and Match, you can find the bikini that not only fits perfectly, but also makes you feel comfortable in your skin. Functional, stylish and designed for all body shapes.

Our core values

Designed by women for women

We create bikinis that keep up with you - whether you're surfing, swimming or relaxing. Our sustainable swimwear combines style, support and comfort so you can feel completely confident and free.

Our core values

Sustainability and Fairness

Our sustainable swimwear is made from high-quality, recycled materials - resource-saving, durable and environmentally friendly. We rely on fair production and responsible manufacturing processes so that you can jump into the waves with a good feeling.

Swimwear for every body type

Whether sporty, curvy or petite, young or old – we celebrate diversity! Thanks to Mix and Match, you can find the bikini that not only fits perfectly, but also makes you feel comfortable in your skin. Functional, stylish and designed for all body shapes.

Designed by women for women

We create bikinis that keep up with you - whether you're surfing, swimming or relaxing. Our sustainable swimwear combines style, support and comfort so you can feel completely confident and free.