Swijin Swimrun Underwear
Solutions for Women

Updated November 2024

Swijin Swimrun underwear is a small company based in Switzerland that focuses on high-tech and eco-friendly sports underwear for women. Aiming at female swimrunners, initially there were three objectives; to produce a sports bra that could function as a sports bra while running, maintain the compression of a wetsuit when swimming, and dry quickly after swim sections when the wetsuit top is 'cab-down'.

There is now a range of 6 products using Swijin's innovative technology, which includes medium-impact and high impact bras up to a D cup, and 4 types of bikini bottom / shorts in various lengths.

According to Swijin, "It all starts with the precious raw materials. The oil pressed from castor beans is spun into the finest of bio-based polyamide yarn and knitted on machines so rare, with needles so thin, they only exist in Europe. Imagine silky, luxurious lingerie, but with athletic performance power. We shot the lights out on this one in drying behaviour."

Image courtesy Swijin

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Swijin Swimrun
Underwear for Women

The Swijin underwear team collaborated with the Swiss Federal Laboratories for Materials Science and Technology to innovate these highly technical products. The prototypes were co-created with elite swimrunners, triathletes, textile engineers, physiologists, designers and sportswear manufacturers.

They claim to have created underwear solutions that outperform the competition by a factor of 10. Wow!

A woman wearing Swijin undergarments zipping up a wetsuit

Image courtesy Swijin

But, as well as creating a whole new generation of women's sports underwear, Swijin has also paid attention to environmental issues. They source their materials from responsible industry leaders who invest in regenerative practices, monitor their carbon footprint, and are 100% European Union based.

Every Swijin product has a digital care label that reveals the supply chain certification and carbon footprint data as well as the washing instructions!

Swijin Swimrun Underwear
The Range

There are currently 6 products in the Swijin range;

The Freeli sports bra
The Freeli shorts
The Freeli high bikini bottom
The Schnuggi sports bra
The Schnuggi short shorts
The Schnuggi bikini bottom

The Freeli range is designed for smaller busts, lightweight, swim-ready, and stitch-free to eliminate chafing and keep you feeling fresh with minimal sweat. Perfect for lower impact, it molds to your shape for a barely-there feel.

The Schnuggi products are ideal for larger busts; this high-impact bra offers all Freeli's essentials plus added K-tape lift, upper breast support, and super-fast drying. Made to stay secure, supported, and sweat-free, even on your toughest days.

The Swijin sports bras have several features that women will love:

Fast drying
Seamless construction
"Breathe Easy" material technology
Shape adaptation

A young woman modelling the bkack Swijin Freeli Sports Bra

Freeli sports bra (medium impact). Courtesy Swijin..

The Schnuggi sorts bra (high impact). Courtesy Swijin.

Let's look at these features in more detail.

1. Fast drying. The Swimrunner dries 80% faster than conventional swimwear, according to Swijin figures. This is the result of the patented knit structure that accentuates capillary action through the weave, effectively "wicking" moisture to the surface where it quickly evaporates.

2. Irritating seams have been eliminated with a revolutionary production process. Swijin uses ultrasonic welding to ensure that any fabric joins are flat and imperceptible. No more seam rubbing, even with the pressure of a wetsuit!

3. Innovative stretch bond technology replaces that old, elastic (soggy and restrictive) underbust band.

4. The Shape Adaptation feature is amazing! Your new bra will feel snug and tight when you first wear it. Activate it by wearing it at least three times in water, then allow it to dry. It will take up your own unique shape, and feel like your second skin!

The Freeli medium-impact sports bra is available in A to D cup sizes. The Schnuggi high-impact sports bra is available in B to D cup sizes, and features a unique construction with upper breast stability, resulting in a Number One Ranking in breast stability by the independent Swiss Federal Laboratories for Materials Science and Technology.

UPDATE - coming soon - the Schnuggi Ultra sports bra in B to G cups.

Swijin Underwear
for Women

Swijin also produces 4 types of brief or shorts. These are made from the same fabrics as the bras in the same range;

The Freeli High Bikini bottom is the 'basic' option, at the lowest price point in the Swijin range. This bikini bottom has a high waistband to help supprt your tummy, and has all the usual Swijin features like super-fast drying, no seams, and superb comfort.

The Schnuggi bikini bottom and Schnuggi shorts have the same construction as the Schnuggi sports bra; there are panels that have TWO layers of Swijin's unique material, bonded together in a series of small "swiss flag" crosses. This produces high levels of support while maintining ultimate comfort.

The Freeli Shorts are longer-leg shorts, like the 'Biker Shorts' that were previously in the product line-up. These are NOT padded, like bike shorts, but they are completely seam-free and designed to be worn without underwear.

Black Swijin Freeli high bikini bottom example

The Freeli High Bikini bottom. Courtesy Swijin.

Schnuggi bikini bottom. Courtesy Swijin.

Schnuggi short shorts. Courtesy Swijin.

Freeli long-leg shorts. Courtesy Swijin.

All Swijin products come with a 30-day return guarantee; you can try the item out for up to 30 days. If you don't love it, then you can return it to Swijin.

ALSO, Swijin offers a complementary repair programme. If your Swijin product suffers some damage while out swimrunning, they will repair it for you.

You can read all about the Swijin product line at the Swijin website, or else you can send an email direct to hello@swijin.com.

Mogsy's Personal Swijin
Review

Mogsy was previously very excited to receive the Swijin Biker shorts and hybrid sports briefs. Unfortunately, owing to illness followed by injury, she has not had the opportunity to try them out - but she will!

A box with Swijin briefs and biker shorts

When you first open the box . . . .

A box containing Swijin swim cap and 2 smaller boxes

. . . and there is something inside . .

. . . and there is a swim cap . . .

two Swijin boxes with pants and biker shorts

. . the hybrid pants and biker shorts!

These garments are very high-quality, with a luxury feel that promises comfort. This range of women's sports underwear suitable for running AND swimming must be the technological breakthrough women athletes have dreamed about!

Highly recommended!