Men's Running Briefs | Runderwear™ – Runderwear AU

Men's Running Briefs - ADD ANY 3 ITEMS TO YOUR BAG SAVE 15%* more


Runderwear™ Men's Running Briefs are the classic fitting favourite of many runners and are perfect under shorts with inner lining that causes chafing.

  • Chafe-free running, guaranteed
  • 360° seamless technology design
  • Breathable, moisture-wicking construction
  • Lightweight and durable technical fabric
  • 92% polyamide, 8% elastane - machine washable at 40°

Colour: Black

  • Black
  • Blue
  • Navy


  • S
  • M
  • L
  • XL
  • XXL

The Runderwear™ Men's Running Briefs are designed to provide exceptional fit, feel and support during your run. Our award-winning underwear will keep you chafe-free - guaranteed. Constructed using 360° seamless technology, which means there are no side seams or tags, resulting in less irritation against your skin. Carefully positioned micro-perforations make the fabric breathable, optimising airflow and core temperature control. Lightweight, technical fabric is moisture-wicking and removes sweat quickly from your skin to keep you dry.

Size Guide

CM 76-81 81-86 86-91 81-96 96-101
INCHES 30-32 32-34 34-36 36-38 38-40
Fabric Composition and Product Care

Fabric Composition:

92% Polyamide
8% Elastane 

Product Care:

  • Warm machine wash up to 40°
  • Wash with similar colours
  • Do not tumble dry
  • Do not soak, bleach or dry clean

Rundercare Help and Advice:

If you need any help or advice, you can contact our Customer Care team, they would love to hear from you!


Runderwear™ Delivery:

FREE delivery in Australia and New Zealand on all orders over $70

Australia & New Zealand

  • FREE delivery (Australia Post Parcel) on all orders over $70
  • For orders under $70 delivery is $9.

Black Friday & Christmas Delivery

We know that delivery services in the US are busier than usual at the moment during this busy period.

Please be patient whilst our delivery partners work as hard and fast as they can to deliver your order to you.

Runderwear™ Returns:

You can return any Runderwear™ Socks, Crop Tops, Support Bras, Base Layers to us within 14 days of purchase and can request a full refund or a product exchange.

Due to hygiene reasons we can not accept returns on underwear including Briefs, Hipsters, G-Strings, Hot Pants, Boxer Shorts and Tri Suits, if they have been worn.

In the unlikely event that your product becomes faulty, you may return your purchase for a full refund or exchange.

Please package your return appropriately and add in a note to let us know whether you require a refund or product exchange. Please pay the postage in full and send to our Rundercare team at the following address:

Runderwear™ Returns
PO Box 5090

Please email our Rundercare team at if you require any further help.

Customer Reviews

Based on 861 reviews
Daniel Bingham
The best undies i've ever owned

I bought 3 pairs (1 for each of the runners in our group) and we've all been back to buy more. They are absolutely unreal

Thank you for your feedback this is greatly appreciated. We are pleased to hear that you are loving your Runderwear Briefs and have already bought some more! We love to hear this.

Thank you for your purchase with Runderwear.

Mark Skinner

Excellent, the best running underwear I’ve used!

Thank you for your feedback, I am so pleased to hear that you are loving the Runderwear Briefs! We hope you have many happy miles in your Runderwear underwear!

Aaron Hohenbrink
Doesn't fit because of narrow cut

I feel like I wasted my money as I didn't realize that this underwear can't be returned even if you just try it only briefly after taking a shower. I'm not sure how someone is expected to know how the underwear fits if you don't briefly try it on. I would not have expected the cut to be so different from my normal briefs that I wear. Maybe they are expecting tall guys (6' 4") to need a bigger size or something but these don't fit well except for around the waist (so I know I got the correct size per the sizing chart). The front part is so narrow that my junk doesn't fit completely and the back part is narrow enough that it would just bunch up in back when moving in them. I have never had these problems before across several brands of briefs. The material feels nice but that's about the only positive thing I can say about them. Maybe these briefs work for smaller guys but they are definitely not cut right for a tall, slender guy like myself.

Thank you for your feedback, I am sorry to hear that you did not get along with the Runderwear Briefs. Unfortunately we use the same policy as most shops do when it comes to underwear making this non returnable once tried. We have the size guides on the website to follow which ensure you purchase the right size and we are an email away if you need any help with sizing. I will be sure to pass your feedback onto the team as all feedback is appreciated!

Tony Rich
Best Jocks I’ve Ever Had!

So comfortable that I have thrown out everything else in the drawer! Just get them, you wont be sorry!

Thank you for your feedback, Great to hear that you are loving your Runderwear Briefs and they are the best that you have tried. We love to hear that these have replaced all your underwear now! Happy Running.

Oldl and slow
running in comfort

comfortable product, no longer a need to grease before a long run.

Thankyou for your feedback, Great to hear that you are loving the Runderwear Briefs. We love to hear this.

Buy any 3 items from across our store and save 15%.

Promotional discount codes can be used in conjunction with this offer except on Anti Blister socks.

Full details available here.

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