Bamboo Undershirts

Better than a vest

Next generation innerwear to keep you looking and feeling good.




I can at last stop looking for that perfect undershirt - I have finally found it! I was so pleased with my first order - I did the usual test purchase to check fit (length/stay tucked) comfort and the obligatory wear/ wash several times test - all perfect results. I being so impressed made two further orders. Thank you all at Robert Owen you really did ‘make my day’.

November 2023


Robert Owen is once more confrimed as my 'go-to' source of - well, at least undershirts! Superb products, moderately priced, and the kind of service you only expect from a personal friend. An altogether excellent shopping experience.

November 2023


Possibly the best I've had, great comfort and fit. Using under fitted merino roll necks etc, not just dress shirts. Good for outdoor activities too.

November 2023
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$54.00

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

Our 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!

Size chart

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


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Logo of Men's Fitness magazine
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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.



It all began because I needed to solve my own problem. I needed an underlayer that stopped my sweat showing on my shirts at work.

I wanted something 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.



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

All designs are exclusive to Robert Owen® and are only available here in our on-line 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.