A T-shirt for warm offices

Short answer: In a warm office, it is the fabric and not the thickness that decides how comfortable a T-shirt feels. Choose a thin quality that moves moisture away from the skin, in a colour that does not show sweat marks, with a little room in the fit.

Moisture needs to move on

In a warm room you sweat slowly and evenly all day, often without noticing. A fabric that moves moisture away from the skin and lets it evaporate keeps the T-shirt dry to the touch. A fabric that just soaks it up and holds on turns clammy after a few hours. See the qualities in men's most popular.

A colour that does not give you away

Black and very light colours show the least after a bit of sweating. Mid grey and some bright colours show the most, because damp fabric turns clearly darker. If you sit in meetings or at a front desk, it is worth keeping in mind. For everyday office wear, a calm dark colour is often the safest choice. See the colours in women's most popular.

A fit with some air

A T-shirt that sits tight against the body leaves no air between fabric and skin. The moisture has nowhere to go and the heat stays put. A slightly looser fit lets air move as you do, so it feels cooler. This matters most across the back. See the styles in all men's clothing.

Thin is not always cool

Many people reach for their thinnest T-shirt when it is warm. But a very thin fabric that does not move moisture can stick to the skin and feel warmer than a slightly heavier fabric that does. Pay attention to how the fabric feels after an hour at your desk, not just in the morning.

The chair and your back

The warmest spot on an office day is often your back. The T-shirt rests against the chair for hours and no air can reach it. Stand up regularly, walk to the printer or the coffee machine and give your back some air. It helps more than you would think, and the fabric gets a chance to dry.

Layers you can take off

Many offices are cool in the morning and warm in the afternoon. A thin T-shirt with a light jumper or cardigan on top lets you adjust through the day. That way you are not cold at eight and sweating at three. Keep the jumper on the back of your chair so it is close at hand.

Washing that keeps the properties

A fabric that moves moisture well can lose some of that ability if it is washed the wrong way. Skip fabric softener, which coats the fibres, and wash inside out at a moderate temperature. Let the T-shirt air dry. That way it keeps you dry through many washes and many long days.

A spare in the drawer

On the hottest days it helps to keep a clean T-shirt at work. A quick change after lunch or before an important meeting gives you a fresh start to the afternoon. It takes up little space and removes the worry about sweat marks when the ventilation cannot keep up.

Frequently asked questions

Does an undershirt help

For some people, yes. The undershirt takes up sweat close to the skin and the outer layer stays dry. It works best when the undershirt is thin and fits close without adding warmth.

Which colour is coolest in an office

Indoors, colour makes almost no difference to temperature. Fabric and fit are what matter. Colour mainly decides whether sweat marks become visible during the day.

Should you change your T-shirt at midday

Only on very hot days or before an important meeting. A clean one in the drawer is cheap insurance that many people are glad to have at the height of summer.