Shoulder tape that keeps the shape
Short answer: A narrow tape along the shoulder seam stops the shoulder from stretching out of shape. It is a small detail that makes a big difference over time.
What the tape does
The shoulder seam carries the whole weight of the garment when it hangs on a hanger or is pulled on over the head. Without a tape, the seam stretches a little each time, and the shoulder gets wider month by month. The tape keeps the seam at the length it was sewn, even after many washes.
How to find it
Turn the garment inside out and look at the shoulder seam. If a narrow tape is sewn into the seam from neck to sleeve, the detail is there. The tape is narrow and easy to miss if you do not look for it, so run a finger along the seam. See bamboo t-shirts for men.
When it matters most
The tape matters most in t-shirts and sweatshirts that hang on a hanger, and in heavier garments where the fabric's own weight pulls on the seam. In light underwear it matters less, since the weight is small and the piece rarely hangs long. See bamboo t-shirt for women and bamboo sweatshirt for men.
Why the shoulder gives way
Knitted fabric gives way when it is loaded over time. A shoulder seam without a tape has nothing to stop the stretch, so the weight pulls the seam further and further down the arm. The result is a drooping shoulder and sleeves that look too long, even though the garment has not grown.
How to hang your clothes
Do not hang a wet garment on a narrow hanger, since the weight of wet fabric pulls hardest on the shoulders. Lay wet clothes flat to dry, or use a wide hanger that supports the whole shoulder. A tape helps, but it does not do all the work alone if the garment is treated roughly.
Thin and heavy garments
In a thin t-shirt the tape often sits as a very narrow strip, and in a heavy sweatshirt it may be wider. The width depends on the garment's weight and on how much the shoulder has to carry. There is no fixed rule, so look at the seam and judge whether it seems solid when you pull lightly.
Sweatshirts carry the most
A sweatshirt weighs more than a t-shirt, so the shoulder takes more strain each time it hangs up or comes off. Here a tape in the shoulder seam is especially worth looking for, because a heavy shoulder without support soon pulls the garment crooked and lets the sleeves hang longer.
Can you feel it from outside
Partly. Run a finger along the shoulder seam from the outside. A seam with a tape feels firmer and steadier than one without, which can feel soft and easy to pull out. It is no sure test, so turn the garment inside out when in doubt and see the seam for yourself.
How the shoulder lasts longest
Lift the garment by the sleeves rather than the neck when you take it off the line, and do not hang heavy pieces over a line where they pull on the shoulder seam. Gentle handling together with a tape in the seam gives the shoulder the best chance of keeping its shape.
Frequently asked questions
Can you sew a tape in yourself
Yes, a narrow cotton tape sewn along the seam with small stitches can work. It takes some patience, and the seam must still be able to give a little, so it does not split.
Why has the shoulder become wider anyway
Often because the garment has hung wet on a hanger. Lay wet clothes flat to dry so the weight does not pull on the shoulder seam while the fabric is soft and easy to stretch.
Can you see the tape from outside
No, it sits inside the seam and is only visible on the inside. Look along the shoulder seam from within if you want to check that it is there before you buy the garment.
You can find the full range at Bamboo-Clothing.com.
