Relaxed fabric, what resting time in production does
Oct 06, 2026
Short answer: Relaxed fabric is knit that has been left to rest after production, so the tension from the machine can ease out. That usually means less shrinking and fewer twisted seams the first time you wash it. Here is what you can feel and what you can do at home.
What tension in knitwear means
When yarn is knitted into fabric, the threads are pulled tight through the machine and keep that tension afterwards. The fabric looks flat and neat, but the fibres want to return to their natural length. That pull is what can later make clothes shrink or twist in the wash.
Why resting makes a difference
If the fabric gets a period of rest before it is cut and sewn, part of the tension can release by itself. The movement then happens before the garment is finished, not inside your washing machine. How long the rest lasts depends on the maker, so you cannot read it from the outside.
What you can feel in the garment
Relaxed fabric often feels calmer in the hand. It lies softly and sits evenly all the way round the body, and the side seams stay at the side where they belong. Tense fabric can feel a little stubborn or spring back when you pull it, especially at the sleeves and cuffs.
The first wash tells you a lot
Take the label seriously for the first wash. Use the temperature it states and avoid a very hot tumble dryer, which can put extra tension back into the fibres. Afterwards, check whether length and width are roughly as before and whether the seams run straight. Small changes are normal, but a clear twist is worth noticing.
Sweat and thick knits
Thicker sweat has more fabric to keep under control, so tension matters more than in a thin T-shirt. A hoodie or sweatshirt that has become shorter in the body but longer in the sleeves has typically been tense. You can look into this yourself when you browse bamboo sweat for men and women at home or in a shop.
Fit and size
Choose the size by how the garment sits after washing, not only when you first try it on. If you are between two sizes, think about whether you wear it to relax or to be active. A little room in the body is often pleasant, but read the size guide from the brand before you decide.
Drying and care
Let the garment dry flat or hang over a hanger so its own weight does not pull on the fabric. Turn sweat inside out in the machine and pick a gentle programme. Knitwear that gets rest both before and after wear keeps its shape longer. You can see more of this kind of clothing among bamboo sweat for men if you want to compare.
Socks follow the same logic
The principle applies to more than sweat. Socks are also knitted under tension and need to settle before they are pleasant to wear. Try a new pair and look at whether the cuff sits well after the first wash. If you want to compare, have a look at socks for men.
Frequently asked questions
Can I tell from a garment whether the fabric is relaxed?
Not for certain in a shop. But you can feel whether the fabric lies calmly, and after the first wash you can see whether the seams are straight and length and width have stayed roughly the same.
Does relaxed fabric mean the garment will not shrink at all?
No, all knitwear can change a little in the wash, and it also depends on how you wash and dry it. Relaxed fabric simply has less tension to lose, so the change is usually smaller.
Should I buy a size up to be safe?
That is rarely necessary. Follow the brand's size guide instead and pick the size that suits your body. If you are right between two sizes, a little extra room in a sweat can be comfortable.
You can find the full range at Copenhagen Bamboo.