Men's Long Sleeve Running Base Layer - Runderwear – Runderwear™

Men's Long Sleeve Running Base Layer - Runderwear


The Runderwear Men’s Long Sleeve Baselayer is super-soft, has excellent moisture-wicking properties, driving sweat away from the skin and allows maximum breathability ensuring your core temperature is optimised.


  • S
  • M
  • L
  • XL
  • XXL

Color: Black

  • Black

The Runderwear Men’s Running Base Layer for cold-weather running is long sleeved, super-soft and has excellent moisture-wicking properties. Special fabric drives sweat away from the skin and allows maximum breathability, ensuring your core temperature is optimised.

Features include:

Ultimate Comfort - Created using an incredibly soft fabric containing high grade elastane, which is label-free to prevent irritation whilst running. Ergonomically designed to move with your body for ultimate comfort. Finger warming mitts that you can wrap over your hands are a useful addition on those cold early morning runs or dark chilly nights.

Seamless design - 360 degree seamless design, resulting in no side seams for ultimate comfort and chafe-free running. Flatlock fine-stitching means that edges are flat, eliminating irritation and rubbing. 

Moisture-Wicking Fabric - the technical fabric is lightweight , label-free and designed to effectively wick sweat away from your skin, eliminating any irritation and ensuring you keep dry and can run chafe-free.  

Dynamic Heat Control - uses high performance moisture-wicking fabric with mesh panels containing micro perforations to increase breathability and sweat removal from your skin, ensuring your core temperature is optimised.

Lightweight Durability – lightweight technical fabric which is highly-durable, washes-well and dries quickly.

Size Guide
  S M L XL
CHEST CM/INCHES 95/37 100/39 105/41 110/43
WAIST CM/INCHES 76/30 81/32 86/34 91/36
Fabric Composition and Product Care

Fabric Composition:

92% Polyamide
8% Elastane

Product Care:

  • Warm machine wash – up to 40 degrees
  • Wash with similar colours
  • Do not tumble dry - Runderwear dries fast thanks to the moisture-wicking technical fabric
  • Do not soak, bleach or dry clean

Customer Reviews

Based on 18 reviews
Base layer top

Excellent product. Does exactly what it says it does. Like all the products I have received from Runderwear.Would recommend to anyone who runs. Delivered in good time as well.

Warm but not sweaty

As a runner who easily gets sweaty was pleasantly surprised on my first try that the base layer was warm but not sweaty. Also had no issue with chafing (nipples usually being the problem).

Great base layer

I normally use UA baselayers, but after the success of the boxers I had already bought I thought I would try the base layer too. Very nice material, and love the turn-over sleeves. Means I should not need gloves for anything but the coldest of my runs.

As mentioned in another review though, the tops come up a bit larger than you would expect. Even in my case after checking the size guide. I needed a size down from what I initially ordered.

Must be tried

Bought the base layer for my son to add to his stock of runderwear. He say they are the absolute best running gear he has had, so not surprising they are the top of list for birthdays and Christmas


This is an amazing product. Super, super comfortable, absolutely lovely feel to it, and it looks great (I may well wear it out and about!) It's also super warm, does exactly what was promised, and washes brilliantly. Really very impressed with this purchase!

Rundercare Help and Advice:

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

Phone: 01202 XXX XXX 

Runderwear Delivery:

Runderwear offers free worldwide delivery on all orders over £30


  • Runderwear offers free worldwide delivery (Royal Mail 2nd Class, non-tracked) on all orders over £30
  • Royal Mail 1st Class, non-tracked: £1.95
  • Royal Mail 1st Cass, tracked: £3.95
  • Guaranteed next working day delivery*:             £4.95

*Orders must be placed before 3pm Monday to Thursday to ensure next day delivery

International - EU

  • Runderwear offers free worldwide delivery (Royal Mail International Parcels, non-tracked) on all orders over £30
  • Royal Mail International Parcels, tracked and signed: £4.99


International – rest of world

  • Runderwear offers free worldwide delivery (Royal Mail International Parcels, non-tracked) on all orders over £30
  • Royal Mail International Parcels, tracked and signed: £6.99


Runderwear Returns:

You can return any Runderwear socks, crop tops, support bras, baselayers or headwear 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
Suite 3 The Yard,
13 Loch Road,
BH14 9EX

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