Bamboo Undershirts

So much better than a vest

Next generation innerwear to keep you looking and feeling good.


Our mission is to make the best undershirts in the world

Speedy delivery, superb product, personal touch.

July 2022

I’ve tried several undershirts and this is by far the best.

July 2022

Best undershirts I’ve ever had.

July 2022
Picture of Sweat Protect Undershirt in white showing triple under-arm layer
Picture of front of Sweat Protect Undershirt in white showing deep v neck
Picture of front of sweat protect undershirt in grey
Picture of back of Sweat Protect undershirt in white
Picture of the back of the sweat protect undershirt in grey
Picture of sweat protect undershirt in grey showing the triple underarm sweat blocking layers
Oxford Underarm Shield (Sweat Blocking) Undershirt
Regular price £40.00 Save £-40.00

Only 21 items in stock!

If you suffer from excessive underarm sweat, this is the undershirt for you.

Our NEW Oxford Underarm Shield undershirt features a sweat blocking triple-layer positioned under the arm. The sweat blocking technology stops underarm sweat from reaching your dress shirt.

So much better than a vest!

If in doubt, size down. Undershirts should be worn as a close fit.

Chest Size
Size inches cm
S 36-38 92-96
M 38-40 97-101
 L 40-42 102-106
XL 42-44 107-112
XXL 44-46 113-118



  • 95% Bamboo Viscose 5% Spandex
  • 150 Grams per Square Meter (GSM)
  • Jersey weave with 20% stretch

Read why Bamboo Viscose is superior to artificial fabrics like polyester.

Micro Modal

  • 94% Micro Modal 4% Spandex
  • 125 Grams per Square Meter (GSM)
  • Jersey weave with 20% stretch

Care for all Fabrics

  • Wash at 40°C on a gentle wash programme
  • Tumble drying not recommended
Washing care: wash at 40 degrees on gentle, iron on medium, do not bleach, dry clean possible, do no tumble dry

Customer Reviews

Based on 15 reviews Write a review

As Seen In

Logo of Men's Fitness magazine
Logo of GQ
Logo of the Huffington Post which featured a piece on Robert Owen Undershirts
Logo of the Grey Fox fashion blog with link to an article about Robert Owen Undershirts


If you've not yet experienced a modern undershirt, you might think it to be a little old fashioned - something your grandfather might have worn. Things have moved on. The contemporary men's undershirt is a technical base layer designed for everyday wear, in the office or home.

Breathable, lightweight modern stretch fabrics such as viscose and micro modal and body-contouring design have combined to update the humble vest, turning it into a performance base layer you can wear in the office.

The modern undershirt is as related to the basic cotton vest of old, as a Nike sports trainer is to a 19th-century leather boot. It's an entirely different beast.

Read More

A problem solved

It all began because I need to solve my own problem.

You probably haven't heard of us before. Robert Owen® is a small independent British brand which I started with my partner in 2013.

I needed an undershirt I could wear all day, that wasn't bulky, didn't make me feel hot and didn't ride up and, importantly, absorbed my sweat on hot days. I couldn't find it, so I decided to make my own. The Oxford undershirt was born. We made a few, and they sold out. So we made more.

We had no idea it would take off as it has - it seems I wasn't alone in needing this solution. Seven years and three product design iterations later, we think we make the best men's undershirts in the UK.

Read More

Only sold here

All designs are exclusive to Robert Owen® and are only available here in our shop - you won't find our undershirts anywhere else.

We design the undershirts in-house because we are fussy about the fit, fabric and function. We don't cut corners.

Take the fabric, for example. Many men's underwear makers mix in cotton because it's cheaper. We don't because we think a cotton mix feels bulky and less refined.

Our undershirts cost a little more, but the feel is worth it.

Click to shop our full range. Our team in Reading UK will send your new undershirts by Royal Mail Tracked post. Postage is free to the UK.

Read More