Runderwear Brand

As is often the case the Runderwear brand story began as a solution to a problem. Chafing! The bane of many runners’ lives.

Richard and Jamie, Runderwear’s founders, met at Loughborough University in the UK. They were placed in the same corridors in Halls of Residence and instantly became friends. They both shared an enthusiasm for sport. Jamie played many sports but had a passion for football. Whilst Richard was a track and cross-country runner.

Following university Jamie began to run more. His increased passion led him to compete in the New York Marathon.

Many miles of training and the race itself put a lot of pressure on Jamie’s body and clothing. He realised that whilst he had great technical outer clothing and footwear, he was wearing his usual underwear. Guess what happened? Yep, chafing!

Jamie searched the marathon expo for some performance underwear, but all he could find was a pair of large Women’s Hot Pants! Not perfect!

Runderwear Brand

When Jamie’s returned to the UK, he and Richard started the search for quality specialist running underwear. They tried a few brands, but nothing was suitable. So, they decided to design and make their own. Runderwear™ was born!

They achieved what they set out to do. Proven by winning ‘Best Underwear & Socks Brand’ three years in a row at the 2018, 2019 and 2020 Running Awards.

The Runderwear range has grown to include different styles of performance underwear, running bras, socks and base layers.

As the Runderwear™ product range expands, Runderwear’s dedicated ethos remains focused on creating chafe-free comfort for runners. Woo hoo!

Shop Runderwear.

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Determine Your Size With Our Bra Size Calculator

1. Underbust Size

2. Overbust Size

Measuring Your Underbust

Stand straight with your arms hanging casually by your side; if you can get a friend to measure you around your chest, directly under your bust.

Ideally, measure yourself while you are wearing a good fitting bra.  The tape should sit directly under your breasts (where your bra band would normally sit), should be horizontal all the way around and be as tight as possible without being uncomfortable (exactly like your bra’s underband).  This measurement is your Underbust.


Measuring Your Overbust

Still standing straight measure horizontally around the fullest part of your bust (usually over the nipples).  This is best done while you’re wearing a good fitting bra.  The tape should not be to tight resting lightly on your body. Make sure the tape is straight across your back and is parallel to the floor.  This measurement is your Overbust.

Finding Your Perfect Fit

Finding your correct Australian Bra Size is as easy as 1, 2, 3. One; follow the instructions below to find your underbust and overbust size. Two; slide the bars to your correct size position to discover your recommended size. Three; start shopping!

  1. Underbust Size; measure around your chest, directly below your bust. Read more below.
  2. Overbust size; measure around the fullest part of your breasts. Read more below.

Crop Tops

Crop tops can fit differently to cupped bras.  Generally speaking they are more similar to women’s clothing sizes.

XS = 8    S = 10   M = 12   L = 14   XL = 16    XXL = 18

Sports Bras Direct recommends crop tops for cup sizes A-D only. You must also check the specific style of crop top suits the level of impact you require.  Breasts that are bigger than a D cup require more specific support from a cup size sports bra.

Each Brand has a slight variation in their actual measurement guidelines for crop tops. Please check brand specific sizing below to establish the best size crop to suit you.

If you are still unsure on your size we would love to help you, please contact us to arrange your personal fitting appointment.

Brand Specific Size Guides