Armholes that gape or pinch, and how to get the fit right

Short answer: An armhole gapes when the opening is cut too big or too low, and pinches when it is too small or too high. Here is how to see the difference, why it happens and how to find an armhole that fits properly in a T-shirt or top.

What an armhole is

The armhole is the opening the arm goes through, and the line around it decides how the clothes lie over shoulder and chest. If it is too big, it gapes and shows more than intended. If it is too small, it presses under the arm and stops you moving freely.

When the armhole gapes

A gaping armhole hangs away from the body, especially when you bend or raise your arm. It is often caused by a size that is too big or a low cut. See bamboo T-shirts for women and compare cuts, so you find a fit that lies calmly.

When the armhole pinches

If it pinches, the T-shirt pulls in the armpit, and the sleeve can cut into the upper arm. That often happens when the size is too small or the armhole is cut high and narrow. Check by raising your arm and moving your shoulder forward and back.

How to check the armhole in the mirror

Stand in front of a mirror and raise your arm. If you see a lot of the side when it lifts, the armhole is large. If you see folds or tightness under the arm, it is small. Also move the way you do in daily life and see whether the T-shirt stays in place.

Size, cut and shoulder

The armhole is linked to the shoulder seam and the width across the chest. If the shoulders are too wide, the armhole drops, and if they are too narrow, it pulls. Compare with the size guide and choose the size where shoulder and chest fit before you look at the sleeve.

The fabric makes a difference

A fabric with a little stretch follows the body and can make a slightly small armhole more comfortable. Bamboo viscose feels soft, and the edge at the sleeve should be flat and soft. Feel the edge and pull it lightly to see that it returns to shape.

Washing and shape over time

After many washes the armhole can go slack or shrink. Wash gently and follow the care label to keep the shape. Turn clothes inside out and avoid strong tumble drying so the edge is not pulled in the machine. That way the fit keeps sitting properly for longer.

Combine with the rest of your clothes

A good armhole belongs to a set that goes together. See bamboo underwear for women for the innermost layer and bamboo jogging sets for women for everyday days when you want something soft and calm. That way the whole layer feels the same.

Frequently asked questions

How do I know if the armhole is too big?

If the clothes stand away from the body or show a lot of the side when you raise your arm, the armhole is often too big. Try a smaller size or another cut.

Can I fix an armhole that pinches?

It is often easier to choose a larger size or another cut than to alter it. Check the shoulder and chest before you decide.

Can an armhole change after washing?

Yes, the edge can go slack or shrink. Wash gently and follow the care label to keep the shape for as long as possible.

You can find the full range at Copenhagen Bamboo.