Which fabrics for a swimsuit? Complete sewing guide

Which fabrics for swimwear? When you want to sew your own swimsuit, this question is essential. The fabric used for this type of garment must have specific properties: elasticity, water resistance, quick drying, and good durability. Without these characteristics, the swimsuit may lose its shape or become uncomfortable after a few uses.

Understanding which fabric to use for swimwear helps avoid many mistakes during sewing. Stretchy fabrics for swimwear like lycra or polyamide elastane are particularly popular because they offer both flexibility and support. These swimwear materials are used in most commercial swimsuits.

To succeed in your project, it is recommended to choose quality technical fabrics like those offered by Verotex, specially adapted for stretchy and durable garments.

In this complete guide, we will see which fabrics for swimwear are best suited depending on your sewing project, their technical characteristics, and advice for choosing a durable and comfortable swimwear sewing fabric.

Which fabrics for swimwear when you are a beginner?

When starting sewing, it is important to choose a fabric that is easy to handle and sufficiently stretchy. Some technical fabrics are easier to sew than others and offer better comfort.

Here are the most used fabrics for swimwear sewing:

• Lycra (elastane): 
  • Very stretchy
  • Fits the body perfectly
  • Quick drying
  • Often protects against UV
• Polyamide elastane: 
  • Very resistant
  • Good durability
  • Optimal comfort
• Nylon spandex: 
  • Very stretchy
  • Comfortable
  • Good water resistance
    
  • Quick drying
• Polyester PBT: 
  • Chlorine resistant
  • Durable
  • Perfect for the pool
• Stretchy microfiber
  • Very soft
  • Stretchy and comfortable
  • Quick drying
  • Breathable

These materials are commonly used for making sportswear and swimwear because they offer excellent elasticity and good water resistance.

What characteristics should a fabric for swimwear have?

To fully understand which fabrics for swimwear to choose, it is important to know the technical properties this type of fabric must have.

A suitable fabric must have several characteristics:

• two-way elasticity to adapt to movements
• chlorine resistance for pool swimsuits
• saltwater resistance for swimming in the sea
• quick drying
• good durability over time

According to the textile encyclopedia, elastane is a fiber widely used in sportswear for its ability to stretch and then return to its original shape.

Which fabric to use to sew a swimsuit depending on the use?

The choice of fabric often depends on the swimsuit’s use. A swimsuit intended for the pool or the beach does not have exactly the same requirements.

Fabric for pool swimwear

Swimsuits used in pools must be especially chlorine resistant.

Recommended fabrics:

• Polyester PBT
• Polyamide elastane
  
• Recycled polyester

These materials retain their elasticity even after many swims.

Fabric for beach swimwear

Swimsuits used at the beach often prioritize comfort and style.

Recommended fabrics:

• Lycra
• Stretch microfiber
• Nylon spandex

These fabrics allow for flexible and comfortable swimsuits.

What are the most used fabrics for swimwear?

Certain materials are particularly popular in swimwear making.

These fabrics meet most projects when looking for which fabrics for swimwear.

How to sew swimwear fabric?

Since the fabrics are stretchy, the sewing must be adapted:

• stretch or jersey needle
• durable polyester thread
• zigzag or stretch stitch
• recommended overlocker

Juki machines are particularly suitable for this type of sewing thanks to their precision and consistency.

Which lining for a swimsuit?

The lining is an important step in making a swimsuit. It improves comfort, prevents transparency, and strengthens the garment's fit.

Two options are available depending on the desired finish:

Option 1: line only certain areas

This option consists of lining only the sensitive areas (bust, crotch).
→ The swimsuit is lighter and more breathable
→ Ideal for simple designs or beach swimsuits

Option 2: fully line the swimsuit

In this case, the entire swimsuit is lined.
→ Offers more comfort
→ Prevents any transparency
→ Improves fit and durability

This option is often recommended for a more professional finish.

Recommended fabrics for the lining:

• Stretch tulle: lightweight, stretchy, and widely used for swimsuits
• Mesh: comfortable and breathable, ideal for certain parts
• Thin foam (lingerie-type foam): soft and pleasant, perfect for areas requiring support

For a good result, the lining must always be stretchy and comfortable, to follow body movements without restricting.

Essential accessories

To successfully make a swimsuit, choosing the fabric is not enough. Accessories play a crucial role in comfort, support, and durability of the garment.

Here are the essential elements to plan for:

• Elastics : they help keep the swimsuit in place at the waist, thighs, or neckline
• Laminette: ideal for reinforcing seams and preventing them from deforming over time
• Foam cups: provide support and shape the bust
• Underwires: used for swimsuit tops, they provide good support
• Cords: practical for adjusting the swimsuit and adding an aesthetic touch
• Closures: useful for certain designs (back, sides), they make dressing easier

These accessories are essential to obtain a swimsuit that is comfortable, attractive, and durable. You can find them in the haberdashery ranges offered by Verotex, perfectly suited for technical sewing projects like swimsuits.

Common mistakes in choosing fabric for a swimsuit

When choosing which fabrics for a swimsuit, some mistakes can make sewing more difficult or reduce the swimsuit’s lifespan.

Here are the most common mistakes:

• choosing a non-stretch fabric
• using a fabric that is too thin or transparent
• ignoring the chlorine resistance
• not checking the fabric composition

Taking the time to test the fabric before sewing often helps avoid these problems.

Conclusion

Understanding which fabrics to choose for a swimsuit is essential to achieve a durable and comfortable sewing project. Stretch fabrics like lycra, polyamide elastane, or PBT polyester are the most suitable because they offer elasticity, durability, and quick drying. The choice also depends on the swimsuit’s use: pool, beach, or sports activity.

By taking the time to select a quality swimsuit fabric suited to your project, you can create a swimsuit that is both attractive, comfortable, and durable. Testing the fabric and using the right sewing tools remains the best way to succeed in your creation.

FAQ on Which fabrics for a swimsuit?

What is the best fabric for a swimsuit?

Lycra or polyamide elastane are the most used fabrics for their elasticity and comfort.

Can cotton be used for a swimsuit?

No, cotton absorbs water and dries slowly, making it unsuitable for swimwear.

What fabric is suitable for a swimming pool swimsuit?

PBT polyester is especially recommended because it resists chlorine very well.

Should a swimsuit be lined?

Yes, a lining improves the comfort and fit of the swimsuit.

Which thread should be used to sew a swimsuit?

A polyester thread is recommended because it resists water and wear better.