When it is time to replace the whole drawer
Short answer: If half the pieces are worn out, the best ones are used all the time and the rest just sit there. Then it is cheaper and easier to replace the whole stack at once.
Signs that it is time
You use the same three pairs and leave the rest. See how to tell that clothes are worn out.
The same age
If everything was bought at the same time, everything is worn out at the same time. That makes the decision easy.
Multipack
A pack makes the replacement cheaper per piece. See when a multipack pays off.
The same style again
If you know the style fits, buy the same. See bamboo underwear for men.
For women
See the corresponding items in bamboo underwear for women.
What you do with the old ones
Worn out clothes go to the textile collection. See how to hand in old clothes for recycling.
Washing
Correct washing puts off the next replacement. See the washing guide.
Frequently asked questions
When should the whole stack be replaced?
When half of it is worn out and you only use the best ones.
Is it more expensive to replace everything at once?
In total yes, but per piece it works out cheaper with a multipack.
What do I do with the old ones?
Hand them in at the textile collection.