Why the edge curls in on jersey

Short answer: The edge curls in because jersey has different stitches on the front and back, and the fabric pulls towards the tighter side. That is normal and not a defect. Here is why it happens and what you can do to get a neat edge.

The two sides of the fabric are not the same

Smooth jersey has a front with small V-shaped stitches and a back with wavy rows. The two sides are not under the same tension, and when the fabric is cut, the edge pulls towards the side where the tension is greatest. It is a property of the knit, not of your garment.

Why it shows mostly at the edge

In the middle of the fabric, the surrounding stitches hold each one in place, so the curl cannot show itself. A raw edge lacks that support, so the fabric can roll in like a tube. It is seen most on thin jersey and is especially clear when you cut a strip from the fabric.

How garments keep the edge down

A proper seam or a rib edge binds the fabric and works against the curl. That is why the bottom of a T-shirt is usually folded and sewn, and the neck gets a band. If an edge is not sewn or the seam has come undone, the curl can return. Look at the edge on bamboo T-shirts for women.

After washing and in use

After a wash the edge may lie a little differently, especially if the fabric has been stretched or the seam is loose. Do not iron the edge if the label advises against it, but pull it gently flat while it is damp. Let the garment dry flat so the edge does not stay in a crooked position.

Tops without sleeves

Tops without sleeves have longer edges at the arm and neck and are therefore more likely to curl. A good edge is sewn or bound, so it lies flat against the body. When you choose a top, take hold of the edge and see whether it lies smooth when you let go. See more in bamboo tops for women.

When the edge bothers you

A curling edge can form a small ridge of fabric that presses against the skin or draws a visible line under clothes. With a seamless edge or a wide, flat seam you feel it less. Try the garment on and move around, and you will see whether the edge stays down.

Underwear and edges

The same goes for underwear, where the edges lie close to the skin. Here the edge should lie flat and not curl, so it does not chafe or make a line under clothes. Check the edge at the leg and waist and feel whether it lies calmly. See bamboo knickers if you want to compare how the edges sit.

What you can do yourself

Rather buy garments where the edge is sewn, and check it before you cut off the label. Wash as directed and dry flat. You cannot make a raw jersey edge lie flat for ever, but a proper seam manages it for years. Let the garment rest flat after washing so the shape comes back.

Frequently asked questions

Is it a defect if the edge curls in?

No, it is a natural property of smooth jersey, especially at a raw edge. A sewn edge or rib band holds the fabric down, so the curl does not appear in normal use.

Can I get a curling edge to lie flat again?

Often a little. Pull the edge gently flat while the garment is damp and let it dry flat. If the seam has come undone, a tailor or a quick repair can help.

Does thick jersey curl less than thin jersey?

Usually yes, because thicker fabric has more weight and stiffness that work against the curl. It depends on the knit, though, so look at the edge before you buy.

You can find the full range at Copenhagen Bamboo.