How an undershirt fits the body and stomach
Short answer: An undershirt fits right when it follows the body without pulling across the stomach, is long enough to stay in the trousers and the neckline lies flat. Choose bamboo undershirts by chest and stomach measurement, not just by what you usually buy.
Why the fit matters
An undershirt that does not fit is felt all day. If it is too tight it presses on the stomach, and if it is too big it makes folds under the shirt. The right fit gives a smooth layer you do not think about, and that is exactly the point of a good inner layer.
Measure chest and stomach
Measure around the chest and around the stomach at the widest point, and compare with the size guide on the product page. It is more reliable than going by your usual size. See the selection under bamboo undershirt for men, where there is a guide for each model.
When the stomach is wider than the chest
If the stomach is wider than the chest, choose by the widest measurement so the undershirt does not pull. A soft and elastic fabric gives more over the stomach. Check that it does not roll up and that it covers the stomach when you bend.
Length and staying in the trousers
The undershirt must be long enough to stay in the trousers, even when you reach up. A model that is too short rides up and leaves a cold stripe at the back. Bend forward and reach your arms over your head, so you see whether the length holds.
Shoulder and neck
The shoulders should sit on the shoulder without hanging down over the arm, and the neckline should lie flat. A neck that is too wide can sag and show under a shirt, while one that is too small can pull. Check the neck after trying it on, and look in the mirror.
Seams and armholes
The armholes must be big enough for you to move your arms freely, but not so big that the fabric hangs. The seams should lie flat so they do not chafe under the arms. Notice whether anything presses when you move.
Between two sizes
If you are between two sizes, the choice depends on whether you prefer a close or loose fit. The smaller gives a smoother layer but can pull across the stomach. The larger is more comfortable but can make folds, so think about what you wear over it.
Care that keeps the fit
Wash gently following the care label and let the undershirt dry hanging, so the fabric is not stretched. A hot tumble dryer can affect the shape. Combine with bamboo underpants for men and a bamboo T-shirt for men for a matching fit.
Frequently asked questions
How do I find the right undershirt size?
Measure chest and stomach at the widest point and compare with the size guide on the product page. Choose by the widest measurement so it does not pull.
What do I do if it rides up?
Choose a longer model or a size up, so the undershirt stays in the trousers. Bend over and reach your arms over your head to test the length.
Should it fit close?
Yes, it should fit close without pulling, so it does not form folds. Choose the fit that feels best.
You can find the full range at Bamboo-Clothing.com.
