When the bra rides up at the back
Short answer: If the bra rides up at the back, the band is too loose or too big. The band has to sit level all the way round and stay in place when you raise your arms.
The band carries
Most of the support comes from the underband, not from the straps. If the band is loose, the whole bra rides up.
The test
Raise your arms above your head. If the band moves upwards, the size is wrong.
Do not tighten the straps
Tightening the straps only moves the weight to the shoulders and causes soreness. See bra for a large bust with wide straps.
One size down in the band
The answer is usually a smaller band. See how to find your bra size at home.
Worn elastic
If the bra used to hold and no longer does, the elastic is used up. See when should a bra be replaced.
See the range
See the models in bamboo bra without underwire.
Washing
Laundry bag at 40 degrees and never a tumble dryer, which destroys the elastic. See the washing guide.
Frequently asked questions
Why does the bra ride up at the back?
Because the band is too loose or too big.
Does tightening the straps help?
No. It only moves the weight to the shoulders and causes soreness.
What do I do instead?
Try a smaller band, or replace the bra if the elastic is worn.