Socks that shrink in the wash and what you can do
Oct 07, 2026
Short answer: Socks shrink in the wash when heat, the tumble dryer or a hard spin pulls the knit together. If they have already become too small, you can often win a little back by stretching them damp and drying them flat, but it does not always work.
Why socks shrink in the wash
Socks shrink when heat, moisture and mechanical movement make the knit pull together. It happens especially at high temperatures and in the tumble dryer. Viscose from bamboo is more sensitive to heat and strong strain when it is wet, so a wash that is too hot can make socks for men feel smaller already after the first time.
Check the care label before you buy
When you choose socks for men, read the care label before the socks end up in the drawer. The label tells you the highest temperature to use and whether the tumble dryer is allowed. If you follow it, you reduce the risk of the socks shrinking and you enjoy the size you chose for longer.
Wash them gently
Wash the socks turned inside out at a moderate temperature and use a little detergent without fabric softener. Avoid a hard spin and do not overload the machine, because then the laundry rubs more against itself. A gentle programme puts less strain on the knit and helps the socks keep their size over several washes.
Dry them without shrinking
Dry the socks in the open air, preferably lying flat or hung over a line, and do not let them dry on a hot radiator. The tumble dryer is often the biggest reason socks become too small. If the label allows it, use a gentle programme and take them out while they are still slightly damp.
How to stretch them back
If a pair has already become too small, put it in lukewarm water and pull it gently in length and width while it is damp. Lay the socks flat on a towel and shape them until they come closer to the original size. This can help a little, but it is no guarantee.
When you fall between two sizes
If you fall between two sizes, choose the larger one if you wash hot or use the tumble dryer, and the smaller one if you wash cold and air dry. Notice how the first pair fits after the first wash. Then you know whether the size holds, and you can adjust the care next time.
Shrinking or ordinary wear
If the sock has gone thin at the heel, or the knit is slack and loses its shape, it is no longer about shrinking but about wear. Then it is time for a new pair. Ordinary wear is normal and not something you can do much about, but gentle care helps durability.
Care for the rest of the drawer
For daily use, several pairs of bamboo socks in rotation work well, and with them bamboo T-shirts for men, which are washed by the same principles. Gentle care and lower temperatures keep more of your clothes in shape across the whole drawer.
In short, how to avoid shrinking
Read the care label, wash gently and let the socks air dry. If a pair has already become too small, try stretching it damp and drying it flat. Choose the size with care if you fall in between, and change pairs often. That way you get the most from your socks without guessing how they will react.
Frequently asked questions
Can I get shrunken socks back into shape?
Often a little. Put them in lukewarm water, pull them gently and dry them flat, but there is no guarantee.
Can bamboo socks go in the tumble dryer?
Only if the care label allows it, and then on a gentle programme. Air drying is safest if you want to avoid them becoming too small.
What temperature should I wash at?
Follow the care label in your socks. A moderate temperature and a gentle programme usually cause the fewest problems with size.
See our range of bamboo socks for women.