Why nightwear rides up at night and what to do about it
Short answer: Nightwear rides up because it is too short or too tight. Both make the fabric creep upwards when you turn over in bed, and length is the easier of the two to change.
Length is the main cause
A top that ends at the waist does not have enough fabric to stay in place when you turn over. Each change of position pulls it up a few centimetres, and by morning it sits under your chest. A longer style that reaches over the hips stays put. See sleep T-shirt for men.
Tightness is the second
A tight garment creates friction against the skin and gets dragged along when you move. That applies to tops and to pyjama trousers, where the legs can creep up your calves. Going up half or a whole size often solves it, because the fabric can then slide over the skin.
The material plays a part
A fabric that slides against the sheet rides up less than one that grips. Thick cotton jersey and fleece have a rough surface that catches on the sheet as the body turns. Bamboo viscose is smooth and slides easily, which helps if you turn many times a night. See bamboo nightwear for women.
The sheet matters too
A rough sheet grips your nightwear so it stays behind as you turn. A smoother sheet reduces the problem, and two smooth surfaces against each other give the least friction. That is why many people find nightwear and bedding in the same material work best together. See bamboo bedding.
The cut at the back
Some tops are cut straight at the back, while others are slightly longer at the back than the front. That extra length makes a difference, because the back slides most against the sheet when you lie on your side or turn over. Look for a style that covers the lower back when you sit.
If you sleep on your front
If you sleep on your front, it is often the front that rides up, because the fabric is pressed into the mattress and dragged along when you draw your knees up. A longer and slightly looser top helps most here. A nightdress is another option, as there is no edge at the waist.
The pyjama waistband
A tight waistband holds the top in place and makes it roll up over it. A soft, wide waistband that sits a little lower gives the top room to fall over it. It sounds like a small detail, but it makes a noticeable difference to where the top ends up by morning.
Washing and shrinking
Nightwear that used to fit can start riding up after a few washes because it has shrunk slightly. Wash at 30 or 40 degrees and hang it to dry, and it keeps its length. The tumble dryer is the most common reason nightwear gets shorter over time.
The simple answer
If you want to stop the problem, start with length. A top that reaches over the hips solves it in most cases. If it is also a little looser and made from a smooth fabric, and you sleep on a smooth sheet, very little can pull it up during the night.
Frequently asked questions
Why does my sleep top ride up over my stomach?
Because it is too short or too tight. A longer, slightly looser style that reaches over the hips stays in place when you turn over in bed.
Does it help to choose a bigger size?
Often, yes. Less friction against the skin means the fabric is not dragged along when you move, and a bigger size is usually a little longer as well.
Does the sheet make a difference?
Yes. A rough sheet grips your nightwear and pulls it along. A smoother sheet reduces friction, so your nightwear stays where it should be.
See our range of bamboo sleepwear.
