The armhole chafes

Short answer: An armhole that chafes is either too tight or has an edge that stands up. More room and a flat seam remove the problem, and it is rarely about the overall size.

The skin works in the armhole

Under the arm the skin stretches in several directions with every step, and an edge that stands up scrapes all the way. That is why a poor armhole is noticed faster than many other spots. It hits thicker styles most, such as a bamboo hoodie for men, where there is more fabric around the seam.

Room matters more than fabric

A soft fabric in a tight armhole chafes as much as a coarse one in a wide armhole. So softness does not decide it, but how much space the arm has. Measure the armhole on a top that fits and compare, as you can with bamboo underwear for men, where the fit also matters a lot.

How to measure the armhole

Lay a well-fitting top flat on a table. Measure from the seam at the shoulder to the seam under the arm and write the number down. Do the same on the one that chafes. If the measurement is clearly shorter, the armhole is too tight. It is a measurement you can see and compare, with no guessing.

The edge that stands up

Some armholes have an edge that does not lie flat against the skin. It scrapes each time you lift your arm, even when the width is fine. Look at the seam from the inside and feel it with a finger. A flat, soft edge gives no friction, while a raised edge does, however soft the fabric is.

A layer underneath removes friction

A smooth layer closest to the skin removes friction, because the seam of the top then rubs against the layer below. It is a simple fix if you already own the top and would rather not replace it. Choose a thin, smooth fabric that does not create new friction. It works best if the armhole otherwise fits reasonably well.

Does it get better with time

A little. The fabric gives, but an armhole that is too tight does not become roomy by itself. Washing and wear soften the edge slightly but do not change the width. If the top has chafed from day one, do not count on it disappearing. It is better to switch to a style with more room from the start.

Choose a style that does not chafe

Look for flat seams and an armhole that does not tighten when you lift your arm. Raise your arms above your head when you try it on. Several styles in the men's range are cut this way, and you can find them under all men's clothing. Compare the measurements with the top that fits you best.

Overall size is rarely the problem

Many go up a size when the armhole chafes, but that often changes only width and length, not the armhole. The top then gets loose elsewhere without the problem being solved. Check the width of the armhole and the shape of the seam instead. That is where the difference lies, and where it pays most to look.

Frequently asked questions

Does it get better with time

A little. The fabric gives, but an armhole that is too tight does not become roomy. Washing softens the edge slightly but does not change the width.

Does a layer underneath help

Yes, a smooth layer closest to the skin removes the friction. Choose a thin, smooth fabric that does not create new rubbing under the armhole.

Is it a measurement you can see

Yes, measure from the seam at the shoulder to the seam under the arm on a top lying flat. Compare with one that fits, and the difference shows quickly.