Swimwear for every body type

Buy a bikini online? No stress – we'll help you find the perfect fit!

Tips for the right size:
✔ Our bikinis fit snug - that is, close-fitting but comfortable. They should provide support without cutting in. If they do, try a size larger.
✔ The fabrics expand slightly in water – this is planned for! So it’s better not to choose too big.
✔ If you have a long torso, you might want to go for a size larger for more length in your swimsuit.
✔ Measure your bust at the widest point (not just your bra size) – this will help you find the best fit.

Large bust? No problem!

• Models like the Audrey, Charm or Adore Top offer extra hold and support without sacrificing style.
• Wider straps and sturdy fabrics ensure stability – perfect for active days on the beach.

Small bust? Perfect!

• The Pasta is ideal for accentuating your natural shape. For a push-up effect, we recommend models with padding like the Adore.
• Minimalist cuts like the two triangle tops create a delicate, feminine look.
• The Sassy is a bit sportier, but is very popular with small or medium busts.

Wide hips?

• High-waist bottoms like the Alice Bottom flatter the figure and highlight the waist.


• The Blush Bottom sits directly on the hips and can be tightened individually with a waistband - perfect for adjusting the fit exactly to your needs.
• Models with a wide waistband are ideal for concealing love handles.

Narrow hips?

• Models like the Ember Bottom or the Keira Bottom create a feminine silhouette.

Butt Coverage – As Much or as Little as You Want

Our bikini bottoms come in different styles so you can get exactly the coverage that suits you:

• Low coverage: For those who want to tan seamlessly or love a cheeky look, our Cheeky Bottoms are just the thing, including the Blush and Flaire
• Medium coverage: Models like the Keira Bottom, Ember or Dusk offer balanced coverage – feminine, comfortable and perfect for active days.
• Lots of coverage: High-waist bottoms like the Posh Bottom or our full-coverage styles like Bliss or Serene offer extra coverage while flattering your figure.

Tip: If you are unsure between two sizes, we recommend choosing the larger size so that the pants do not cut in.

Our swimsuits and UV shirts are specially made for active women who want both comfort and protection - whether surfing, playing beach volleyball or romping with the kids.

• UV protection: Our UV shirts offer UPF50+ sun protection so you can enjoy your time in the sun without worry - ideal for long days at the beach or on the water.
• Perfect for water activities: Our one-pieces are designed to fit securely and give you full freedom of movement, whether you want to surf, swim or just be active.
• Long torso? Choose a size larger to get more length and ensure the swimsuit fits comfortably.
• Firm fit: Our fabrics are dimensionally stable and adapt to your body. They expand slightly in the water, which we have already taken into account in the fit.

Tip: One-pieces like our sporty styles are not only functional, but also incredibly versatile - they look great not only on the beach, but also as a bodysuit under shorts or skirts.

Our children's swimwear is not only sustainable, but also functional and comfortable - perfect for active days on the beach or in the water.

💡 Note on children's sizes:
Our children's sizes are given in age information. Since every child grows at a different rate, the size selection can vary. We are happy to help you find the right size - just write to us at info@maindesign.ch .

• UPF50+ sun protection: Our UV shirts and swimsuits offer reliable sun protection so that the little ones can play carefree.
• Freedom of movement: Whether splashing around, swimming or building sandcastles – our children's swimwear is cut to follow every movement.
• Durable materials: Made from high-quality recycled fabrics that are not only good for the environment but also durable enough for any adventure.
• Matching Mini Me – For you and the little ones: Our designs are designed so that mothers and children can shine in a matching look – from stylish one-pieces to cute UV shirts.
• Fit tip: If your child is between sizes, we recommend choosing the larger size to allow enough room for growth.

Our children's collection is not only practical but also stylish - with cheerful colors and prints that children love.

Bust: Measure your bust around the fullest part while standing upright, making sure the tape measure stays straight.
Waist: Find the narrowest point between your lowest rib and your hip. Hold the measuring tape loosely.
Hips: Measure the widest part of your hips while standing straight.

📌 Please note:
Our sizes have been adjusted! If you have already ordered from us, take a look at the new size chart. Some bikinis on sale run smaller.

Still got questions?

If you are unsure, just write to us at info@maindesign.ch – we will be happy to help you! 😊