Knickers that do not ride up between the cheeks

Short answer: Knickers ride in when they are too small, too loose or cut differently from what you need. The fix is usually a different size, a different cut or an edge that sits flat. Here is what you can try and what to look for.

Why knickers ride up

Knickers ride in when the fabric is pulled along by the movement of the body and the edge does not hold. That can be down to the wrong size, too little elastic in the edge, or a back panel cut too narrow. Once you know the cause, it is easier to pick a model that fits. See a selection of bamboo knickers.

Check the size first

Knickers that are too small are pulled in by the tension, and ones that are too big hang and shift. Measure yourself and compare with the size guide. If you are between two sizes, the description can say whether the model runs small or large. One size up or down can make a big difference to whether they stay put.

The cut matters a lot

The width of the back panel decides how much fabric covers. A model with full coverage often stays in place better than a narrow one. The height at the waist and the shape at the legs also matter. Try different cuts and feel what works for you. It is very individual.

The edge at the legs

An edge that lies flat and has a little elastic keeps the knickers in place. If it is too loose they creep up, and if it is too tight they can roll. Look for soft, flat edges that do not dig in. They often sit better and are felt less under clothes.

Fabric and stretch

Viscose from bamboo is soft and fluid, and bamboo knickers are often blended with elastane so they follow the body. How much the fabric gives depends on the blend. Read the description and choose a model where stretch and cut suit your body and your clothes.

The clothes on top matter

Knickers that sit nicely under a loose dress can behave differently under tight trousers. Think about the clothes you wear most and choose accordingly. Tight clothes pull on the knickers, and loose ones let them shift. Take that into account when you choose a cut.

Washing and care

Worn elastic is a frequent reason knickers start to ride up. Follow the care label, use a laundry bag and a gentle programme, and avoid fabric softener and high heat. Replace them when the elastic is slack. Also see bamboo underwear for women.

Try it in practice

Walk, sit and bend in a new pair at home before you decide. Feel whether they stay where they should. What works on paper does not always work on the body. For combinations, look at bamboo tops for women, which suit everyday wear.

Frequently asked questions

Why do my knickers ride up between the cheeks?

Often because the size or cut does not suit. The back panel may be too narrow, the edge too loose, or the fabric is pulled along by movement. Try another size or cut.

Does a bigger size help?

Not always. Knickers that are too big can hang and shift. Measure yourself and compare with the size guide before you choose.

Can worn elastic be the cause?

Yes, slack elastic means the knickers no longer hold. Replace them when the elastic is no longer firm.