Men's Merino Running Briefs | Runderwear™ – Runderwear.com

Men's Merino Running Briefs

$28.00$40.00

Merino, but not as you know it! Merino Briefs made with our intelligent Merino blend that is designed for performance; no matter the challenge - we’ve got you covered. With anti-bacterial, odour-resistant and sweat wicking properties, you’ll stay fresher for longer. Designed to keep you cool in the heat, and warmer when it’s cold, our unique Merino blend was inspired by nature and will keep you 100% chafe-free, guaranteed.

  • Intelligent Merino blend with performance feel
  • Sustainable, responsibly sourced Merino
  • Unique seamless Merino design
  • Naturally regulates body temperature
  • Anti-bacterial, odour-resistant and removes sweat quickly
  • 100% chafe-free, guaranteed

Color: Grey

  • Grey

Size

  • Select Size
  • S
  • M
  • L
  • XL
  • XXL

Seamless & Sustainable

The world’s first seamless Merino running underwear range. The magic of Merino wool with the added bonus of 360° seamless construction provides unrivalled comfort and performance. Our Merino wool is responsibly sourced from non-mulesed sheep that are sheared once a year, offering a sustainable and renewable fibre

Runderwear Men's Merino Running Briefs - Seamless & Sustainable

Temperature Control

Merino wool comes from Merino sheep, who face scorching hot summers and bitterly cold winters in their natural Australian mountain habitat. As a result, their wool has evolved to have unmatched levels of temperature control - so our Merino range will keep you at the perfect temperature in any conditions

Runderwear Men's Merino Running Briefs - Temperature Control

Odor-Resistant

This intelligent, organic fibre also absorbs both odor-causing bacteria and moisture from your body, quickly. It traps the bacteria to make it odor-resistant and it can absorb up to 35% of its own weight before feeling wet, meaning you stay fresh and dry on your run

Runderwear Men's Merino Running Briefs - Odour-Resistant
 

Customer Reviews

Based on 70 reviews
91%
(64)
4%
(3)
1%
(1)
3%
(2)
0%
(0)
T
T.J.
Only 45% merino!

I just received these "merino" wool underwear, thinking they would be merino wool. They fit fine, and I have yet to see how they perform with sweat and odor, but can they really credibly claim merino wool? They're 45% merino wool and 40% polyester, which I only discovered when looking at the actual garment. The website touts the benefits of merino wool as if the product is primarily merino. Coming back to the site, I can't seem to find the merino content listed anywhere. Perhaps, these should be advertised as polyester underwear, and they should have a full spread articulating the wonderful merits of polyester? Don't buy these if you're expecting to get a garment that is primarily merino wool.

Hey Teddy,

Thanks for your review, Our co-founder Jamie who is a marathon runner wanted to develop a pair of seamless merino underwear for his own running. Through years of development the selected yarn was a blend of merino and Thermocool which is a thermoregulation polyester (not regular polyester) keeping you cool when hot but also warm when running in colder environments. The yarn is a premium yarn from Südwolle.

I am looking forward to hearing your feedback after you have trialled and we of course take on board your comments and we must communicate the above clearer on our website. I really appreciate the feedback and look forward to yours.

Best,

Molly

S
Scotty B
Excellent Briefs

I bought these a while ago,but hadn't done a review until I wore them to give my honest opinion.....
I can honestly say I was totally suprised how good they really are. I put them on for a 13 mile hike ,which was a very hard trek ,with steep hills..weather was very warm ,17c and sunny..I wore these for over 6 hours and never felt hot wearing them,and I felt like I had gone commando they were so brilliant..
No sweating in the private parts or creases of the legs nor was my waistband wet/damp from body heat..
Definitely 💯 recommend, really good value for money and hold everything in place too if you get me..
Would love too see them in black or khaki in the future for bit more choice..
Treat yourself, you won't regret it....

Hey Scott,

Thank you for your lovely feedback, We are pleased to hear that you are loving your Men's Merino Briefs and they were great for your hiking trip. I will be sure to pass your feedback on to the product team in regards to the colour ways and we hope you have many more happy miles in your Runderwear Briefs!!

R
Richard A
Excellent

I have bought these for a (yet to undertake) multi-day trek, but having tried them on, they are the best and most comfortable fit of any underwear I’ve tried.

Thank you for your review, We are pleased to hear that you are loving your Merino Underwear and they are the most comfortable underwear that you have tried.

Thank you for your purchases with Runderwear.

H
Harry
not great

bought a pair of these and a pair of the standard non-chafe briefs. The non-chafe are far superior and comfortable. The merino are sadly unusable for me

Thank you for your review, I am sorry to hear that you did not get along with the Merino Briefs and you prefer the original Briefs. If you have any queries please do not hesitate to get in touch.

S
Stuart Hatcher
Just the best rundies you can buy

these are quite simply the best running underwear item that you can buy and that i have owned and tried. they will last and last as a high quality high performance but of kit, the merino is a great addition to running briefs as it helps wick away and keep you dry. i've used these for marathons and ultra marathons and the performance levels as against other underwear over these distances are superior. there is a lot of great running underwear out there now, but if i was to hands down be asked for 1 recommendation only it would be these. yes there are expensive (the 3 pack makes them almost affordable...) but you get the sense of why they are after using them for a while, and as i say, they will last so the overall investment cost is probably better than inferior product and when you factor in comfort, well, who wouldn't pay any price for that. they feel great, no itching or scratching or chafing and wash up well. just the best rundies you can buy imho.

Thankyou for your lovely feedback, Great to hear that you are loving the Runderwear Merino Briefs and they are the best that you have tried. We love to hear this! Thankyou for your purchases with Runderwear!

Merino, but not as you know it! Our seamless Merino Briefs use an intelligent Merino blend designed for performance - no matter the challenge, we’ve got you covered. With anti-bacterial, odour-resistant and sweat wicking properties, you’ll stay fresher for longer. Keep cool in the heat and run warm when it’s cold with our unique technical fabric inspired by nature. Enjoy being 100% chafe-free, guaranteed.

  • Intelligent Merino blend with performance feel
  • Sustainable, responsibly sourced Merino
  • Unique seamless Merino design
  • Naturally regulates body temperature
  • Anti-bacterial, odour-resistant and removes sweat quickly
  • 100% chafe-free, guaranteed

Fabric Composition:

45% Merino Wool
40% Polyester Thermocool™
10% Polyamide
5% Elastane

Product Care:

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

Runderwear Help and Advice:

If you need any help or advice, you can contact Team Runderwear, we would love to hear from you!

Email: hello@runderwear.com

Runderwear Shipping:

We aim to ship the majority of our US orders from our warehouse in Millboro, VA. In the rare circumstance that we are unable to fulfil your order from our US warehouse, then we will dispatch your order from our UK warehouse on a tracked service at no extra cost. This should take 7-10 business days to arrive.

US Delivery

Delivery Option

Cost

Carrier Service

Delivery Time

Free Shipping – Orders over $60

Free

US Postal Service - 1st Class Tracked

3-6 business days

Standard Shipping - Orders under  $60

$8.00

US Postal Service - 1st Class Tracked

3-6 business days


Runderwear Returns:

You can return any Runderwear socks, crop tops, support bras, base layers or headwear to us within 30 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 triathlon 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 us at the following address:

Runderwear Returns
i-Fulfilment | RUNDERWEAR, Virginia Warehouse, 223 Millboro Industrial Pk Rd, Millboro, VA 24460, USA

Please email Team Runderwear at hello@runderwear.com if you require any further help.

Customer Reviews

Based on 70 reviews
91%
(64)
4%
(3)
1%
(1)
3%
(2)
0%
(0)
T
T.J.
Only 45% merino!

I just received these "merino" wool underwear, thinking they would be merino wool. They fit fine, and I have yet to see how they perform with sweat and odor, but can they really credibly claim merino wool? They're 45% merino wool and 40% polyester, which I only discovered when looking at the actual garment. The website touts the benefits of merino wool as if the product is primarily merino. Coming back to the site, I can't seem to find the merino content listed anywhere. Perhaps, these should be advertised as polyester underwear, and they should have a full spread articulating the wonderful merits of polyester? Don't buy these if you're expecting to get a garment that is primarily merino wool.

Hey Teddy,

Thanks for your review, Our co-founder Jamie who is a marathon runner wanted to develop a pair of seamless merino underwear for his own running. Through years of development the selected yarn was a blend of merino and Thermocool which is a thermoregulation polyester (not regular polyester) keeping you cool when hot but also warm when running in colder environments. The yarn is a premium yarn from Südwolle.

I am looking forward to hearing your feedback after you have trialled and we of course take on board your comments and we must communicate the above clearer on our website. I really appreciate the feedback and look forward to yours.

Best,

Molly

S
Scotty B
Excellent Briefs

I bought these a while ago,but hadn't done a review until I wore them to give my honest opinion.....
I can honestly say I was totally suprised how good they really are. I put them on for a 13 mile hike ,which was a very hard trek ,with steep hills..weather was very warm ,17c and sunny..I wore these for over 6 hours and never felt hot wearing them,and I felt like I had gone commando they were so brilliant..
No sweating in the private parts or creases of the legs nor was my waistband wet/damp from body heat..
Definitely 💯 recommend, really good value for money and hold everything in place too if you get me..
Would love too see them in black or khaki in the future for bit more choice..
Treat yourself, you won't regret it....

Hey Scott,

Thank you for your lovely feedback, We are pleased to hear that you are loving your Men's Merino Briefs and they were great for your hiking trip. I will be sure to pass your feedback on to the product team in regards to the colour ways and we hope you have many more happy miles in your Runderwear Briefs!!

R
Richard A
Excellent

I have bought these for a (yet to undertake) multi-day trek, but having tried them on, they are the best and most comfortable fit of any underwear I’ve tried.

Thank you for your review, We are pleased to hear that you are loving your Merino Underwear and they are the most comfortable underwear that you have tried.

Thank you for your purchases with Runderwear.

H
Harry
not great

bought a pair of these and a pair of the standard non-chafe briefs. The non-chafe are far superior and comfortable. The merino are sadly unusable for me

Thank you for your review, I am sorry to hear that you did not get along with the Merino Briefs and you prefer the original Briefs. If you have any queries please do not hesitate to get in touch.

S
Stuart Hatcher
Just the best rundies you can buy

these are quite simply the best running underwear item that you can buy and that i have owned and tried. they will last and last as a high quality high performance but of kit, the merino is a great addition to running briefs as it helps wick away and keep you dry. i've used these for marathons and ultra marathons and the performance levels as against other underwear over these distances are superior. there is a lot of great running underwear out there now, but if i was to hands down be asked for 1 recommendation only it would be these. yes there are expensive (the 3 pack makes them almost affordable...) but you get the sense of why they are after using them for a while, and as i say, they will last so the overall investment cost is probably better than inferior product and when you factor in comfort, well, who wouldn't pay any price for that. they feel great, no itching or scratching or chafing and wash up well. just the best rundies you can buy imho.

Thankyou for your lovely feedback, Great to hear that you are loving the Runderwear Merino Briefs and they are the best that you have tried. We love to hear this! Thankyou for your purchases with Runderwear!

The best Christmas Gift for runners - Runners World
“The best Christmas gift for runners"
You will feel a million pounds - Womens Running
“You’ll feel a million pounds”
Maintain their shape after repeated washing - excellent
“Maintain their shape after repeated washing - excellent”
Breathable, Wickable and Chafe-Free - Trail Running Magazine
“Breathable, Wickable and Chafe-Free”
Super comfy and sweat wicking - the guardian
“Super comfy and sweat wicking”