Does Your Swimsuit Sag???

  • 7 min read

Does Your Swimsuit Sag? Our don't!!!!

All garments, of any type, will eventually 'retire'. Either they will lose their shape, their colors will fade, fall out of fashion or the item just doesn't fit you the way it once did. 

Some garments, like swimsuits and athletic apparel may also start sagging.  When wet or even when dry, swimsuits of lower quality will lose their elasticity and start 'hanging' or bulge.

But worry not!  I am here to share some great news!!!!  YOUR SAUIPE SWIMSUIT WILL NOT SAG. In fact, they will last many seasons and look just like new if cared for properly. (Check out the Reviews page to read what customers are saying....)

As a general rule, the higher the quality of the swimsuit you will purchase, the longer it will last.  Our goal at SAUIPE is to make sure your swimsuit will last for many seasons.  Of course we respect your investment in our high quality swimwear, but we also want to minimize the amount of items that are discarded every year.   

The lifetime of your swimsuit can be extended considerably depending on how it is made and how it is cared for. 

What we are made of

We will now discuss the fibers and fabrics used in our swimwear products, how that high quality will prevent your swimsuit from sagging, and provide a longer life to your suit.   

Sauipe uses fabrics that combine polyamide and elastane. Both are man made materials.  Staying true to our values, we will also discuss how Sauipe finds a balance when using these man made materials in order to lessen our impact on the environment.

Donatella in ivory


A good garment should not only look well-made and be of high quality, but it should also fit comfortably.

Some materials used in clothes, such as polyester, nylon, cotton, wool, etc., do a very good job at delivering great products, and are comfortable to the touch and to wear. But they don't quite provide the perfect fit. 

That comfortable, elastic, perfect fit is provided by Elastane.

Elastane was invented in 1937 in Germany, originally, as a substitute for rubber. Later, after DuPont, the company that created Nylon and Polyester, started producing the first nylon polymers, there was further work done to make nylon fibers less rigid and more stretchable.

Researchers discovered that polyurethane could be spun into fine threads and made to be more elastic. These studies were the initial foundation for the development of the Elastane used in textiles.

The first elastane fibers were produced by Bayer. In the late 1950's the actual elastane fibers were developed independently by U.S. scientists and DuPont. 

Elastane is not the same as Spandex or Lycra.  Spandex is a simple anagram of the word “expands”, whereas Lycra is a brand name by DuPont, which was launched in 1962.

Elastane is a man-made material that combines both man-made and natural fibers.

Elastane is made of polyurethane, which is a polymer produced by a chemical reaction of a polyester with a diisocyanate.

The resulting polymer is then spun into fibers. It is considered an elastomer due to its ability to recoil to its original length after being stretched up to seven times its length.

The production of the elastane fiber happens after the polymer reactions, in which the prepolymer is produced and then reacted with diamine in order to extend the polymer chains.  The result is a solution that is pumped into a spinning cell where the fibers are created.  

The last step is to treat the fibers with a finishing agent and then roll them onto a spool, which is the final product that is then used to weave it with other textile fibers for the production of garments. 


A polyamide is a polymer with repeating units linked by amide bonds.  Polyamides occur both naturally and artificially. Examples of naturally occurring polyamides are proteins, such as wool and silk.

Polyamide, also known as Nylon, is soft to the touch, really tough and has the highest resistance to abrasion of all textile raw materials even when wet. It is also very stretchy. Polyamide has low absorbency, wicks away moisture, and dries quickly.

It is also produced as a chemical solution that is spun into fibers for further transformation into a large variety of products, including garments. 


Transforming the Fibers Into Fabric

There are many different swimsuit fabrics, that differ in the quality of the fiber, the composition and how the fibers are woven to produce the final product. 

Not all polyamides and elastane are created equal. Depending on their chemical composition and how they are spun, these fibers can have more or less elasticity, hold on to colors better, be more resistant to the elements, etc. 

These fibers are woven into fabrics, and the weaving methods can also differ from fabric to fabric and even more so from vendor to vendor.   For instance, two materials that have the same 87% polyamide and 13% elastane composition can look and feel different to the touch, and they can also perform differently when you wear the garment.  That is, in part, due to the weaving and manufacturing methods. 

The fabrics we use at Sauipe are extremely durable, resistant and elastic. If you stretch the fabric of your swimsuit you will see that it stretches both ways and the weaving is very close, so you can barely see any 'lines' when they stretch. These are characteristics of a very durable and high quality fabric. 

And these fabrics are one of the reasons why your Sauipe swimsuit will NOT SAG!

I can't stress it enough. Quality fabrics are the foundation for a great fitting swimsuit that will last for a very, very long time, keeping its original shape and color.

How Harmful Are These Fabrics????

They are not harmful to your skin, but they do leave some footprint on the environment.

HOWEVER, the fabrics we use are manufactured with auditable materials and processes. Our vendors meet high standards of sustainability in the textile industry, such as: compostability; biodegradability at disposal; water recycling and proper treatment of any used chemical; no genetic modifications; closed production cycles; only use of non-toxic and non-harmful products to human health and production traceability. 

They also have Oeko-Tex® Class I and II certification , an external and international audit that attests to the absence of toxic products in the fabrics used as garments, confirming that they are safe for human skin. 

The yarn used in the manufacturing of our fabrics is the first biodegradable polyamide in the world developed in Brazil by Rhodia®.

The decomposition that used to take decades to occur for conventional polyamide, occurs much faster now:   50% of the decomposition happens in the first year and in 3 years the fabric is completely decomposed - when discarded in an anaerobic environment/landfill. The remaining decomposition occurs in an even shorter period.


Image of swimwear grade fabric that is elastic. 

Making the Cut 

Another important factor in avoiding sagging is how the suit is cut. The difference can be in millimeters or 1/8 of an inch, but it will show. And sag.  The difference can also be on HOW the fabric is cut, in which direction, or if the fabric is properly 'rested' before cutting.  

Each brand cut and fit is unique, and so are women's bodies.  We are all different, and two similar suits made of the same material can fit differently because of the way it is cut. Careful production is another factor in ensuring that the suit stays true to size and that it will hug your body just right. 

Caring for your Swimsuit

Proper care is a very important factor that impacts the way your suit will fit and how long it will last.  Proper care will also prevent the suit from sagging.

We discuss proper swimwear care in another blog post (How to Wash Swimsuits And Other Tips), but here is the gist:

  • pretreat your swimsuit with white vinegar and water (details on that blog post)
  • be careful where you sit: rough surfaces will damage your suit
  • always rinse after each use
  • use mild, color safe detergent, and you don't need too much of it
  • let the suit dry flat
  • never, never, never keep a swimsuit wet inside a bag or rolled in a towel
  • no washer or dryers
  • lay your suit on a flat soft surface to dry. A clean towel is a great surface.

A Final Note: Sustainability

As we all know, the world is in trouble. Global warming, depleted resources, abnormal floods and fires. 

Although this blog post is about 'Why Do Swimsuits Sag?',  this topic meets sustainability when it comes to quality.  A higher quality swimsuit not only will not sag, but it will also last much longer. And that translates into a more sustainable product.  

One may wonder, if the fabric Sauipe uses has man made fibers, why shouldn't I just buy a 100% cotton swimsuit? You may. But as discussed above, natural fibers like cotton do not offer elasticity, which is important for a great fitting swimsuit.

Other important factor to consider is how your garment is manufactured.  All manufacturing processes have some impact on the environment. Even those that produce 100% cotton garments. But following high standards of sustainable production, lessening the release of chemicals in the environment, recycling, reusing and economizing on resources are the foundation for a sustainable production. We cannot stop manufacturing, but we can make it better and more responsible. 

So finding the right balance between use of resources, production and extending the life of any product is key to lessen the impact on the environment.

    To learn more about Sauipe's commitment to a sustainable product, please read our Brand Ethics page.

    We Will Not Sag!

    The bottom line is, our suits will not sag because of the high quality materials we use, the way we cut our swimsuits, and because we know you will give your swimsuit all the TLC it deserves.  

    The best swimsuit you will ever wear is waiting for you! Here is our complete collection

    If you have any question or comments, please email us at info@sauipeswim. We would love to hear from you!

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