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Bamboo Undershirts

Better than a vest

Next generation undershirts, climate control for your body
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Picture of a man wearing an Oxford undershirt in white
The Oxford
Picture of a man wearing a Chester v neck undershirt in heather grey
The Chester
Long sleeve white micro modal undershirt
Long Sleeve Undershirts
Man wearing white crew neck undershirt on a white backgound
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Frosty mornings, icy commutes, overheated offices — winter in the UK is all about managing variability. A quality undershirt is the warm, breathable layer that keeps you comfortable wherever the day takes you.

Stay warm without bulk: A lightweight base layer that adds warmth under shirts, jumpers, and winter coats.

Invisible comfort: Tailored to sit smoothly under winter layers with no visible lines.

Upgrade your winter base layer. Explore our Winter Warmth essentials and see why UK smart men are choosing Robert Owen Undershirts for comfort, confidence, and everyday insulation.

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Picture of a man wearing an Oxford undershirt in white
The Oxford
Picture of a man wearing a Chester v neck undershirt in heather grey
The Chester
Long sleeve white micro modal undershirt
Long Sleeve Undershirts
Man wearing white crew neck undershirt on a white backgound
End-of-Line

As Seen In

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Customer Reviews

★★★★★
My new undershirt makes my shirts newer and better. 

My new undershirt is light, well fitted and so comfortable to wear, that I often forget that I actually wearing it! I can now wear really good, quality shirts and know that they are well protected and will last. It’s always so easy to buy from Robert Owen and it always feels like I’ve bought something very special that no-one else has. A very efficient and personable company.

★★★★★
Like an all-day warm hug

Long time fan returning to say that every winter I look forward to that first day I can slip back into my long-sleeve Robert Owen. It genuinely feels like an all-day warm hug, only without the part where someone expects me to talk about my feelings. Soft, comfortable and reliably warm. Easily the best base layer I own.

★★★★★
Brilliant 

These undershirts are great for the summer and winter, close fitting so they don’t feel bulky or restrictive. Wash and wear very well. This purchase is replacing old undershirts and will be buying again when replacements are needed. Fast delivery and hand written message for that personal touch. Would recommend 10/10

★★★★★
A high quality undershirt that fits for purpose

I have been looking for a good quality undershirt that can contain my son's super sweaty armpits :D (sorry son). I'm just fed up with the extra effort that I have to put every time I wash his shirts, it's not helping his favourite colour is white. I found the website by accident and I'm happy that I found it as the product is just what he needs. It's comfortable and effectively keeping his sweat under control.
The website is easy to manouvre around and goods sent on time.
Happy with the whole experience.

★★★★★
Exceptional Quality and Proactive Customer Service

These are, without a doubt, excellent and well-made undershirts. While they are on the expensive side, the quality is immediately apparent and, in my opinion, justifies the cost.

What truly set this company apart, however, was the outstanding customer service. They sent me a personalized letter to proactively inform me of a slight color discrepancy with my order. This level of transparency and personal care is rare and very much appreciated. I am thoroughly impressed and will be a returning customer.

★★★★★
Comfy

Brave new world. I’ve never felt so comfortable wearing a shirt, hell I even tried it under a thicker henley and it was great. First experience with undershirts in general. Great service from Robert Owen as well, I’ll be back.

Picture of Robert - founder of Robert Owen Undershirts
Home Grown

Origin Story

Born from a simple idea — make the men’s vest fit for the 21st century. Robert Owen set out to reinvent the undershirt: soft bamboo fabric, body-hugging fit, British-made quality. Designed, tested, and perfected in the UK for modern comfort.

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Browse all Undershirts

Picture of a man wearing an Oxford undershirt in white
The Oxford
Picture of a man wearing a Chester v neck undershirt in heather grey
The Chester
Long sleeve white micro modal undershirt
Long Sleeve Undershirts
Man wearing white crew neck undershirt on a white backgound
End-of-Line

SO MUCH BETTER THAN A VEST

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.

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A PROBLEM SOLVED

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.

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ONLY SOLD HERE

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.

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