Fit in T-shirts

Sep 12, 2026

Short answer: The shoulder seam should sit on the edge of the shoulder, the sleeve should end around the middle of the upper arm, and the length should cover the waistband. Those three things decide how a T-shirt fits, whatever the style or colour.

The shoulder first

If the seam sits out on the upper arm, the T-shirt is too big. If it sits in on the shoulder, it is too small and pulls across the back when you reach forward. Check the shoulder first in the mirror, because the rest of the T-shirt hangs from it. See the fits in men's most popular.

Sleeve length and width

The sleeve should end around the middle of the upper arm and sit close without pulling. A tight sleeve limits movement and pulls on the shoulder seam. A sleeve that is too wide stands out from the arm and makes the upper body look broader. Lift your arm and see whether the sleeve follows. See the styles in Copenhagen Bamboo's most popular.

Length in relation to your trousers

The T-shirt should cover the waistband, even when you lift your arms or bend forward. Too short and your stomach shows with every movement. Too long and the fabric gathers over your seat and makes your legs look shorter. As a rule of thumb, the hem ends around the middle of the fly. See the lengths in all men's clothing.

Chest and sides

Across the chest, the T-shirt should sit close without pulling, so the side seams hang straight down. If they pull towards the chest, it is too narrow. If the fabric stands out at the sides, it is too wide. You should be able to breathe deeply and move your arms freely.

The neckline

The neckline should lie flat and close to the neck without pressing. If it stands out or ripples, the T-shirt is too big or the edge has lost its spring. A neckline that is too tight is felt all day. A crew neck or a V-neck also changes how the T-shirt sits.

How the fabric falls

A soft fabric falls closer to the body than a stiff one. That means the same size can feel different from style to style. A soft fabric with some stretch follows your movements and does not crease as easily. Notice how it hangs when you stand still and when you move.

Test the fit in the mirror

Stand in front of the mirror and look at the shoulder seam, the sleeve and the hem. Then lift your arms, bend forward and twist your upper body. Does the T-shirt stay put, or does it ride up and pull? It takes a minute and shows more than standing still.

Once you have found your size

When you find a T-shirt that fits, lay it flat and measure it. Measure from armpit to armpit and from shoulder to hem. Write the numbers down. Next time you buy a new style, you can compare them with the size guide instead of guessing from the letter.

Frequently asked questions

Should a T-shirt fit close

It is a matter of taste. It should move with you without hanging off the shoulders, and the shoulder seam should sit on the shoulder edge however close the rest fits.